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USN-4768-1: musl vulnerabilities

15 March 2021

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 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)

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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 16.04
Ubuntu 14.04

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

References

Related notices

  • USN-3534-1: libc-bin, libc6-amd64, locales, libc6-i386, libnss-dns-udeb, glibc-source, libc6-dev-armel, libc6-dev-i386, libc6-udeb, libc6-armel, libnss-files-udeb, libc6-pic, libc6-s390, nscd, locales-all, libc6-prof, glibc, eglibc, multiarch-support, libc6-dev, libc6-x32, libc6, eglibc-source, glibc-doc, libc6-dev-s390, libc6-ppc64, libc6-dev-amd64, libc6-dev-ppc64, libc6-dev-x32, libc-dev-bin
  • USN-3536-1: eglibc, libc6

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Further reading