1. Ubuntu Security Notices
  2. USN-4768-1

USN-4768-1: musl vulnerabilities

Publication date

15 March 2021

Overview

Several security issues were fixed in musl.

Releases

Packages

  • musl - standard C library

Details

It was discovered that musl did not properly handle kernel syscalls. An
attacker could use this vulnerability to cause a denial of service (crash)
or possibly execute arbitrary code. (CVE-2018-1000001)

It was discovered that musl did not properly handle the parsing of DNS
response codes. 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.
(CVE-2014-3484)

It was discovered that musl did not properly handle the parsing of DNS
response codes. 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 16.04 ESM.
(CVE-2017-15650)

It was discovered...

It was discovered that musl did not properly handle kernel syscalls. An
attacker could use this vulnerability to cause a denial of service (crash)
or possibly execute arbitrary code. (CVE-2018-1000001)

It was discovered that musl did not properly handle the parsing of DNS
response codes. 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.
(CVE-2014-3484)

It was discovered that musl did not properly handle the parsing of DNS
response codes. 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 16.04 ESM.
(CVE-2017-15650)

It was discovered that musl did not properly handle the parsing of ipv6
addresses. 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. (CVE-2015-1817)

It was discovered that TRE library, used by musl, did not properly handle
certain inputs. An attacker could use this vulnerability to cause a denial of
service (crash). (CVE-2016-8859)

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 musl –  1.1.9-1ubuntu0.1~esm2  
14.04 trusty musl –  0.9.15-1ubuntu0.1~esm1  

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References

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