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Vulnerability details: VCID-vzcv-kms3-aaam
Vulnerability ID VCID-vzcv-kms3-aaam
Aliases CVE-2021-45931
Summary HarfBuzz 2.9.0 has an out-of-bounds write in hb_bit_set_invertible_t::set (called from hb_sparseset_t<hb_bit_set_invertible_t>::set and hb_set_copy).
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-787 Out-of-bounds Write
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3 6.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-45931.json
epss 0.00132 https://api.first.org/data/v1/epss?cve=CVE-2021-45931
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epss 0.0014 https://api.first.org/data/v1/epss?cve=CVE-2021-45931
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epss 0.00421 https://api.first.org/data/v1/epss?cve=CVE-2021-45931
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epss 0.00664 https://api.first.org/data/v1/epss?cve=CVE-2021-45931
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epss 0.00664 https://api.first.org/data/v1/epss?cve=CVE-2021-45931
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=2036820
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2021-45931
cvssv3 6.5 https://nvd.nist.gov/vuln/detail/CVE-2021-45931
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2021-45931
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-45931.json
https://api.first.org/data/v1/epss?cve=CVE-2021-45931
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=37425
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/harfbuzz/OSV-2021-1159.yaml
https://github.com/harfbuzz/harfbuzz/commit/d3e09bf4654fe5478b6dbf2b26ebab6271317d81
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4EAIZKL4O67FN2CWJYHYKZEMNYWNWO3D/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5A7TCR2MY46YK3NHQZB3SLESUH354IEA/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DI6247WOAKB46CZZ6SCDSJVWWCW3GMZH/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EAIZKL4O67FN2CWJYHYKZEMNYWNWO3D/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5A7TCR2MY46YK3NHQZB3SLESUH354IEA/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DI6247WOAKB46CZZ6SCDSJVWWCW3GMZH/
https://security.gentoo.org/glsa/202209-11
2036820 https://bugzilla.redhat.com/show_bug.cgi?id=2036820
cpe:2.3:a:harfbuzz_project:harfbuzz:2.9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:harfbuzz_project:harfbuzz:2.9.0:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
CVE-2021-45931 https://nvd.nist.gov/vuln/detail/CVE-2021-45931
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-45931.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:M/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2021-45931
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:R/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-45931
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:R/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-45931
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 0.29563
EPSS Score 0.00132
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
There are no relevant records.