USN-4768-1: musl vulnerabilities
15 March 2021
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 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
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04
-
musl
-
1.1.9-1ubuntu0.1~esm2
Available with Ubuntu Pro
Ubuntu 14.04
-
musl
-
0.9.15-1ubuntu0.1~esm1
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.