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USN-5990-1: musl vulnerabilities

31 March 2023

Several security issues were fixed in musl.

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Releases

Packages

  • musl - standard C library

Details

It was discovered that musl did not handle certain i386 math functions
properly. An attacker could use this vulnerability to cause a denial of
service (crash) or possibly execute arbitrary code. This issue only
affected Ubuntu 14.04 ESM, Ubuntu 16.04 ESM, and Ubuntu 18.04 LTS.
(CVE-2019-14697)

It was discovered that musl did not handle wide-character conversion
properly. A remote attacker could use this vulnerability to cause resource
consumption (infinite loop), denial of service, or possibly execute
arbitrary code. This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04
ESM, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2020-28928)

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04
Ubuntu 14.04

In general, a standard system update will make all the necessary changes.

References

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Further reading