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Vulnerability details: VCID-wpaw-nh5h-aaag
Vulnerability ID VCID-wpaw-nh5h-aaag
Aliases CVE-2021-28831
Summary decompress_gunzip.c in BusyBox through 1.32.1 mishandles the error bit on the huft_build result pointer, with a resultant invalid free or segmentation fault, via malformed gzip data.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-755 Improper Handling of Exceptional Conditions
CWE-763 Release of Invalid Pointer or Reference
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-28831.json
epss 0.00566 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00566 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00566 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00676 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00755 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00755 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00767 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00767 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00767 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00767 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00767 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00767 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00767 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00767 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00767 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00767 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00767 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00878 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00878 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00878 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00884 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00884 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00884 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00884 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00884 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00884 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00884 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00884 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00884 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00886 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00902 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.00902 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01047 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01047 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01047 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01047 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01047 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01047 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01047 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01047 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01047 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01047 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01047 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01076 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01076 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01076 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01076 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01076 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01076 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01402 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01402 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01402 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01402 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
epss 0.01623 https://api.first.org/data/v1/epss?cve=CVE-2021-28831
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=1941028
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2021-28831
cvssv3 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-28831
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2021-28831
archlinux Low https://security.archlinux.org/AVG-1707
archlinux Low https://security.archlinux.org/AVG-1708
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-28831.json
https://api.first.org/data/v1/epss?cve=CVE-2021-28831
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28831
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://git.busybox.net/busybox/commit/?id=f25d254dfd4243698c31a4f3153d4ac72aa9e9bd
https://lists.debian.org/debian-lts-announce/2021/04/msg00001.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UDQGJRECXFS5EZVDH2OI45FMO436AC4/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7ZIFKPRR32ZYA3WAA2NXFA3QHHOU6FJ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZASBW7QRRLY5V2R44MQ4QQM4CZIDHM2U/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3UDQGJRECXFS5EZVDH2OI45FMO436AC4/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Z7ZIFKPRR32ZYA3WAA2NXFA3QHHOU6FJ/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZASBW7QRRLY5V2R44MQ4QQM4CZIDHM2U/
https://security.gentoo.org/glsa/202105-09
https://security.netapp.com/advisory/ntap-20250509-0005/
1941028 https://bugzilla.redhat.com/show_bug.cgi?id=1941028
985674 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=985674
ASA-202103-11 https://security.archlinux.org/ASA-202103-11
ASA-202103-12 https://security.archlinux.org/ASA-202103-12
AVG-1707 https://security.archlinux.org/AVG-1707
AVG-1708 https://security.archlinux.org/AVG-1708
cpe:2.3:a:busybox:busybox:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:busybox:busybox:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
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-2021-28831 https://nvd.nist.gov/vuln/detail/CVE-2021-28831
USN-5179-1 https://usn.ubuntu.com/5179-1/
USN-5179-2 https://usn.ubuntu.com/5179-2/
USN-6335-1 https://usn.ubuntu.com/6335-1/
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-2021-28831.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: AV:N/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-28831
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-2021-28831
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-2021-28831
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 0.77662
EPSS Score 0.00566
Published At Dec. 17, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.