Vulnerability Details : CVE-2021-45931
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).
Vulnerability category: Memory Corruption
Products affected by CVE-2021-45931
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
- cpe:2.3:a:harfbuzz_project:harfbuzz:2.9.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-45931
0.66%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 80 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-45931
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2021-45931
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-45931
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5A7TCR2MY46YK3NHQZB3SLESUH354IEA/
[SECURITY] Fedora 35 Update: mingw-harfbuzz-2.9.1-1.fc35 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://security.gentoo.org/glsa/202209-11
HarfBuzz: Multiple vulnerabilities (GLSA 202209-11) — Gentoo securityThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4EAIZKL4O67FN2CWJYHYKZEMNYWNWO3D/
[SECURITY] Fedora 35 Update: harfbuzz-2.9.1-1.fc35 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DI6247WOAKB46CZZ6SCDSJVWWCW3GMZH/
[SECURITY] Fedora 34 Update: mingw-harfbuzz-2.9.1-1.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/harfbuzz/OSV-2021-1159.yaml
oss-fuzz-vulns/OSV-2021-1159.yaml at main · google/oss-fuzz-vulns · GitHubExploit;Third Party Advisory
-
https://github.com/harfbuzz/harfbuzz/commit/d3e09bf4654fe5478b6dbf2b26ebab6271317d81
[set] Make all operators null-safe again · harfbuzz/harfbuzz@d3e09bf · GitHubPatch;Third Party Advisory
-
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=37425
37425 - harfbuzz:hb-subset-fuzzer: Crash in hb_bit_set_invertible_t::set - oss-fuzzExploit;Issue Tracking;Third Party Advisory
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