Stack-based buffer overflow in libspf2 - CVE-2021-20314

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU55918

Stack-based buffer overflow in libspf2 - CVE-2021-20314

Published: August 17, 2021


Vulnerability identifier: #VU55918
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-20314
CWE-ID: CWE-121
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing SPF macros in libspf2. A remote attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

libspf2
Gentoo Linux
Fedora
Ubuntu
libmail-spf-xs-perl (Ubuntu package)
libspf2-2 (Ubuntu package)
libspf2-dev (Ubuntu package)
spfquery (Ubuntu package)
libspf2 (Debian package)
mail-filter/libspf2
libspf2

How to mitigate CVE-2021-20314

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

libmail-spf-xs-perl (Ubuntu package) - addressed in versions Ubuntu Pro, 1.2.10-7+deb9u2build0.20.04.1
libspf2-2 (Ubuntu package) - addressed in versions Ubuntu Pro, 1.2.10-7+deb9u2build0.20.04.1
libspf2-dev (Ubuntu package) - addressed in versions Ubuntu Pro, 1.2.10-7+deb9u2build0.20.04.1
spfquery (Ubuntu package) - addressed in versions Ubuntu Pro, 1.2.10-7+deb9u2build0.20.04.1
libspf2 (Debian package) - update to 1.2.10-7.1~deb10u1
mail-filter/libspf2 - update to 1.2.11
libspf2 - addressed in versions 1.2.11-1.20210922git4915c308.el7, 1.2.11-1.20210922git4915c308.el8, 1.2.11-1.20210922git4915c308.fc33, 1.2.11-1.20210922git4915c308.fc34, 1.2.11-1.20210922git4915c308.fc35

External References

Related Security Bulletins