Libass
CVE-2020-26682
HIGH
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionNVD
In libass 0.14.0, the ass_outline_construct's call to outline_stroke causes a signed integer overflow.
AnalysisAI
In libass 0.14.0, the ass_outline_construct's call to outline_stroke causes a signed integer overflow. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Technical ContextAI
This vulnerability is classified as Integer Overflow (CWE-190), which allows attackers to cause unexpected behavior through arithmetic overflow. In libass 0.14.0, the ass_outline_construct's call to outline_stroke causes a signed integer overflow. Affected products include: Libass Project Libass.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate arithmetic operations, use safe integer libraries, check bounds before allocation.
The wrap_lines_smart function in ass_render.c in libass before 0.13.4 allows remote attackers to cause a denial of servi
The check_allocations function in libass/ass_shaper.c in libass before 0.13.4 allows remote attackers to cause a denial
Buffer overflow in the calc_coeff function in libass/ass_blur.c in libass before 0.13.4 allows remote attackers to cause
Same weakness CWE-190 – Integer Overflow or Wraparound
View allSame technique Buffer Overflow
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External POC / Exploit Code
Leaving vuln.today