What’s Vulnerable › Vulnerabilities

CVE-2023-25193

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-02-04 · updated 2026-06-17
• Weakness: CWE-770

Description

hb-ot-layout-gsubgpos.hh in HarfBuzz through 6.0.0 allows attackers to trigger O(n^2) growth via consecutive marks during the process of looking back for base glyphs when attaching marks.

Affected products

• Fedoraproject Fedora: 36
• harfbuzz: through 6.0.0

References

• https://chromium.googlesource.com/chromium/src/+/e1f324aa681af54101c1f2d173d92adb80e37088/DEPS#361
• https://github.com/harfbuzz/harfbuzz/blob/2822b589bc837fae6f66233e2cf2eef0f6ce8470/src/hb-ot-layout-gsubgpos.hh
• https://github.com/harfbuzz/harfbuzz/commit/85be877925ddbf34f74a1229f3ca1716bb6170dc
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KWCHWSICWVZSAXP2YAXM65JC2GR53547/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZ5M2GSAIHFPLHYJXUPQ2QDJCLWXUGO3/
• https://security.netapp.com/advisory/ntap-20230725-0006/
• https://chromium.googlesource.com/chromium/src/+/e1f324aa681af54101c1f2d173d92adb80e37088/DEPS#361
• https://github.com/harfbuzz/harfbuzz/blob/2822b589bc837fae6f66233e2cf2eef0f6ce8470/src/hb-ot-layout-gsubgpos.hh
• https://github.com/harfbuzz/harfbuzz/commit/85be877925ddbf34f74a1229f3ca1716bb6170dc
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KWCHWSICWVZSAXP2YAXM65JC2GR53547/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZ5M2GSAIHFPLHYJXUPQ2QDJCLWXUGO3/
• https://security.netapp.com/advisory/ntap-20230725-0006/

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