CVE-2016-7970
CVE-2016-7970 is a high-severity vulnerability in Libass Project Libass with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 5% (91st percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Libass Project Libass
- Published:
- Last modified:
Description
Buffer overflow in the calc_coeff function in libass/ass_blur.c in libass before 0.13.4 allows remote attackers to cause a denial of service via unspecified vectors.
Frequently asked questions
- What is CVE-2016-7970?
- Buffer overflow in the calc_coeff function in libass/ass_blur.c in libass before 0.13.4 allows remote attackers to cause a denial of service via unspecified vectors.
- How severe is CVE-2016-7970?
- CVE-2016-7970 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2016-7970 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2016-7970?
- CVE-2016-7970 primarily affects Libass Project Libass. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2016-7970?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2016-7970 published?
- CVE-2016-7970 was published on 2017-03-03 and last updated on 2026-06-17.
References
- http://www.openwall.com/lists/oss-security/2016/10/05/2
- http://www.securityfocus.com/bid/93358
- https://bugzilla.redhat.com/show_bug.cgi?id=1381960
- https://github.com/libass/libass/pull/240/commits/08e754612019ed84d1db0d1fc4f5798248decd75
- https://github.com/libass/libass/releases/tag/0.13.4
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KW6DNERYHPI5Y6SQYU3XKTVSCOWMIHUC/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7JJ2SGVOX6UQQIRMVC3QACJLKHE2PYN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUOUOK3VULMMZTNSCRFCNPDAPDWAVK7X/
- https://security.gentoo.org/glsa/201702-25
Affected products (4)
- cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:*
- cpe:2.3:a:libass_project:libass:*:*:*:*:*:*:*:*
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