Packages
- libass - Portable subtitle renderer for the ASS/SSA subtitle format
Details
It was discovered that LibASS incorrectly handled certain ASS files. A remote
attacker could possibly use this issue to cause a denial of service. One of
the issues, CVE-2016-7970, only affected Ubuntu 16.04 ESM.
(CVE-2016-7969, CVE-2016-7970, CVE-2016-7972)
It was discovered that LibASS incorrectly handled parsing operations for
specific nested character strings. An attacker could possibly use this issue
to cause a denial of service. This issue was only fixed in Ubuntu 16.04 LTS.
(CVE-2020-24994)
It was discovered that LibASS incorrectly handled certain ASS files. A remote
attacker could possibly use this issue to cause a denial of service. One of
the issues, CVE-2016-7970, only affected Ubuntu 16.04 ESM.
(CVE-2016-7969, CVE-2016-7970, CVE-2016-7972)
It was discovered that LibASS incorrectly handled parsing operations for
specific nested character strings. An attacker could possibly use this issue
to cause a denial of service. This issue was only fixed in Ubuntu 16.04 LTS.
(CVE-2020-24994)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 16.04 xenial | libass5 – 0.13.1-1ubuntu0.1~esm2 | ||
| 14.04 trusty | libass4 – 0.10.1-3ubuntu1+esm1 | ||
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