Search for vulnerabilities
Vulnerability details: VCID-bnjc-ytj1-aaaq
Vulnerability ID VCID-bnjc-ytj1-aaaq
Aliases BIT-2021-23437
BIT-pillow-2021-23437
CVE-2021-23437
GHSA-98vv-pw6r-q6q4
PYSEC-2021-317
SNYK-PYTHON-PILLOW-1319443
Summary The package pillow 5.2.0 and before 8.3.2 are vulnerable to Regular Expression Denial of Service (ReDoS) via the getrgb function.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (4)
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-23437.json
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00196 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00493 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00493 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00493 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00493 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00504 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00669 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00669 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00669 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00669 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00669 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00669 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00669 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00669 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00669 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00669 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00669 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
epss 0.00669 https://api.first.org/data/v1/epss?cve=CVE-2021-23437
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=2001907
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-98vv-pw6r-q6q4
cvssv3.1 7.5 https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2021-317.yaml
generic_textual HIGH https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2021-317.yaml
cvssv3.1 6.7 https://github.com/python-pillow/Pillow
generic_textual MODERATE https://github.com/python-pillow/Pillow
cvssv3.1 7.5 https://github.com/python-pillow/Pillow/commit/9e08eb8f78fdfd2f476e1b20b7cf38683754866b
generic_textual HIGH https://github.com/python-pillow/Pillow/commit/9e08eb8f78fdfd2f476e1b20b7cf38683754866b
cvssv3.1 7.5 https://lists.debian.org/debian-lts-announce/2024/03/msg00021.html
generic_textual HIGH https://lists.debian.org/debian-lts-announce/2024/03/msg00021.html
cvssv3.1 7.5 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RNSG6VFXTAROGF7ACYLMAZNQV4EJ6I2C
generic_textual HIGH https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RNSG6VFXTAROGF7ACYLMAZNQV4EJ6I2C
cvssv3.1 7.5 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VKRCL7KKAKOXCVD7M6WC5OKFGL4L3SJT
generic_textual HIGH https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VKRCL7KKAKOXCVD7M6WC5OKFGL4L3SJT
cvssv3.1 7.5 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RNSG6VFXTAROGF7ACYLMAZNQV4EJ6I2C
generic_textual HIGH https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RNSG6VFXTAROGF7ACYLMAZNQV4EJ6I2C
cvssv3.1 7.5 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VKRCL7KKAKOXCVD7M6WC5OKFGL4L3SJT
generic_textual HIGH https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VKRCL7KKAKOXCVD7M6WC5OKFGL4L3SJT
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2021-23437
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-23437
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-23437
cvssv3.1 7.5 https://pillow.readthedocs.io/en/stable/releasenotes/8.3.2.html
generic_textual HIGH https://pillow.readthedocs.io/en/stable/releasenotes/8.3.2.html
archlinux Low https://security.archlinux.org/AVG-2366
cvssv3.1 7.5 https://security.gentoo.org/glsa/202211-10
generic_textual HIGH https://security.gentoo.org/glsa/202211-10
cvssv3.1 7.5 https://snyk.io/vuln/SNYK-PYTHON-PILLOW-1319443
generic_textual HIGH https://snyk.io/vuln/SNYK-PYTHON-PILLOW-1319443
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-23437.json
https://api.first.org/data/v1/epss?cve=CVE-2021-23437
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23437
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2021-317.yaml
https://github.com/python-pillow/Pillow
https://github.com/python-pillow/Pillow/commit/9e08eb8f78fdfd2f476e1b20b7cf38683754866b
https://lists.debian.org/debian-lts-announce/2024/03/msg00021.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RNSG6VFXTAROGF7ACYLMAZNQV4EJ6I2C
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RNSG6VFXTAROGF7ACYLMAZNQV4EJ6I2C/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VKRCL7KKAKOXCVD7M6WC5OKFGL4L3SJT
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VKRCL7KKAKOXCVD7M6WC5OKFGL4L3SJT/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RNSG6VFXTAROGF7ACYLMAZNQV4EJ6I2C
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RNSG6VFXTAROGF7ACYLMAZNQV4EJ6I2C/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VKRCL7KKAKOXCVD7M6WC5OKFGL4L3SJT
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VKRCL7KKAKOXCVD7M6WC5OKFGL4L3SJT/
https://pillow.readthedocs.io/en/stable/releasenotes/8.3.2.html
https://security.gentoo.org/glsa/202211-10
https://snyk.io/vuln/SNYK-PYTHON-PILLOW-1319443
2001907 https://bugzilla.redhat.com/show_bug.cgi?id=2001907
AVG-2366 https://security.archlinux.org/AVG-2366
cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
CVE-2021-23437 https://nvd.nist.gov/vuln/detail/CVE-2021-23437
GHSA-98vv-pw6r-q6q4 https://github.com/advisories/GHSA-98vv-pw6r-q6q4
USN-5227-1 https://usn.ubuntu.com/5227-1/
USN-5227-2 https://usn.ubuntu.com/5227-2/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-23437.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2021-317.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/python-pillow/Pillow
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/python-pillow/Pillow/commit/9e08eb8f78fdfd2f476e1b20b7cf38683754866b
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://lists.debian.org/debian-lts-announce/2024/03/msg00021.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RNSG6VFXTAROGF7ACYLMAZNQV4EJ6I2C
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VKRCL7KKAKOXCVD7M6WC5OKFGL4L3SJT
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RNSG6VFXTAROGF7ACYLMAZNQV4EJ6I2C
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VKRCL7KKAKOXCVD7M6WC5OKFGL4L3SJT
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23437
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23437
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-23437
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://pillow.readthedocs.io/en/stable/releasenotes/8.3.2.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://security.gentoo.org/glsa/202211-10
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://snyk.io/vuln/SNYK-PYTHON-PILLOW-1319443
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

Exploit Prediction Scoring System (EPSS)
Percentile 0.38691
EPSS Score 0.00196
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.