USN-6584-1: Libspf2 vulnerabilities

Releases

• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• libspf2 - Sender Policy Framework for SMTP authorization

Details

Philipp Jeitner and Haya Shulman discovered that Libspf2 incorrectly handled
certain inputs. If a user or an automated system were tricked into opening a
specially crafted input file, a remote attacker could possibly use this issue
to cause a denial of service or execute arbitrary code. (CVE-2021-20314)

It was discovered that Libspf2 incorrectly handled certain inputs. If a user or
an automated system were tricked into opening a specially crafted input file, a
remote attacker could possibly use this issue to cause a denial of service or
execute arbitrary code. This issue only affected Ubuntu 18.04 LTS and
Ubuntu 20.04 LTS. (CVE-2021-33912, CVE-2021-33913)

Update instructions

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

Ubuntu 20.04

• libmail-spf-xs-perl - 1.2.10-7+deb9u2build0.20.04.1
• libspf2-2 - 1.2.10-7+deb9u2build0.20.04.1
• libspf2-dev - 1.2.10-7+deb9u2build0.20.04.1
• spfquery - 1.2.10-7+deb9u2build0.20.04.1

Ubuntu 18.04

• libmail-spf-xs-perl - 1.2.10-7ubuntu0.18.04.1~esm1
  Available with Ubuntu Pro
• libspf2-2 - 1.2.10-7ubuntu0.18.04.1~esm1
  Available with Ubuntu Pro
• libspf2-dev - 1.2.10-7ubuntu0.18.04.1~esm1
  Available with Ubuntu Pro
• spfquery - 1.2.10-7ubuntu0.18.04.1~esm1
  Available with Ubuntu Pro

Ubuntu 16.04

• libmail-spf-xs-perl - 1.2.10-6ubuntu0.1~esm1
  Available with Ubuntu Pro
• libspf2-2 - 1.2.10-6ubuntu0.1~esm1
  Available with Ubuntu Pro
• libspf2-dev - 1.2.10-6ubuntu0.1~esm1
  Available with Ubuntu Pro
• spfquery - 1.2.10-6ubuntu0.1~esm1
  Available with Ubuntu Pro

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

References

• CVE-2021-33912
• CVE-2021-33913
• CVE-2021-20314

Related notices

• USN-6584-2: spfquery, libspf2-2, libspf2-dev, libmail-spf-xs-perl, libspf2