Heap-based buffer overflow in systemd - CVE-2013-4391

Vulnerability details

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

The vulnerability exists due to a boundary error in Integer overflow in the valid_user_field function in journal/journald-native.c in systemd. A remote attacker can use a large journal data field to trigger heap-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

How to mitigate CVE-2013-4391

External References

• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=725357
• http://cgit.freedesktop.org/systemd/systemd/commit/?id=505b6a61c22d5565e9308045c7b9bf79f7d0517e
• http://www.debian.org/security/2013/dsa-2777
• http://www.openwall.com/lists/oss-security/2013/10/01/9
• https://bugzilla.redhat.com/show_bug.cgi?id=859051
• https://security.gentoo.org/glsa/201612-34

Related Security Bulletins

• Multiple vulnerabilities in Freedesktop systemd
• Gentoo update for systemd