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Ubuntu 20.04 ESM: 5990-1 Critical: Musl DoS Risk Detected

ubuntu
Calendar Grey March 31, 2023
Scroller Ubuntu
Numerous vulnerabilities addressed in musl impact various versions of Ubuntu. Essential update guidelines are available.
Several security issues were fixed in musl.

Summary

Several security issues were fixed in musl.

Software Description:

- 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)

Topics%20covered

Topics Covered

security advisory denial of service critical issue software update Ubuntu resource consumption musl

Update Instructions

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

Ubuntu 20.04 ESM:
musl 1.1.24-1ubuntu0.1~esm1
musl-dev 1.1.24-1ubuntu0.1~esm1

Ubuntu 18.04 ESM:
musl 1.1.19-1ubuntu0.1~esm1
musl-dev 1.1.19-1ubuntu0.1~esm1

Ubuntu 16.04 ESM:
musl 1.1.9-1ubuntu0.1~esm3
musl-dev 1.1.9-1ubuntu0.1~esm3

Ubuntu 14.04 ESM:
musl 0.9.15-1ubuntu0.1~esm2
musl-dev 0.9.15-1ubuntu0.1~esm2

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

References

CVE-2019-14697, CVE-2020-28928

Severity
critical
Lowest
Low
Medium
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Critical

March 31, 2023

Topics%20covered

Topics Covered

security advisory denial of service critical issue software update Ubuntu resource consumption musl

Package Information

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