NULL pointer dereference in Patch - CVE-2018-6951

Vulnerability identifier: #VU11177

CSH Severity: Low

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-6951

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the intuit_diff_type function due to NULL pointer dereference. A remote attacker can cause the service to crash.

Patch
Gentoo Linux
Arch Linux
SUSE Linux
Fedora
patch (Alpine package)
patch

Install update from vendor's website.

patch (Alpine package) - addressed in versions 2.7.5-r2, 2.7.6-r2
patch - addressed in versions 2.7.6-3.fc26, 2.7.6-3.fc27, 2.7.6-5.fc27, 2.7.6-5.fc28

• https://savannah.gnu.org/bugs/index.php?53132#comment0

• Denial of service in GNU patch
• SUSE Linux update for patch
• OpenSUSE Linux update for patch
• Gentoo update for Patch
• Arch Linux update for patch
• NULL pointer dereference in patch (Alpine package)
• Fedora 27 update for patch
• Fedora 26 update for patch
• Fedora 27 update for patch
• Fedora 28 update for patch