Buffer access with incorrect length value in memcached - CVE-2011-4971

Vulnerability identifier: #VU11318

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2011-4971

CWE-ID: CWE-805

Exploitation vector: Remote access

Exploit availability: Public exploit is available

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

The weakness exists in the (1) process_bin_sasl_auth, (2) process_bin_complete_sasl_auth, (3) process_bin_update, and (4) process_bin_append_prepend functions due to a large body length value in a packet. A remote attacker can trigger memory corruption and cause the service to crash.

memcached
Debian Linux
Ubuntu

memcached (Alpine package)

Install update from vendor's website.

memcached (Alpine package) - addressed in versions 1.4.15-r0, 1.4.15-r1, 1.4.15-r2, 1.4.20-r0, 1.4.22-r0, 1.4.25-r0
- update to 2.11-8ubuntu4

• Exploit #69 - Memcached Remote Denial of Service (March 18, 2020)

• https://code.google.com/archive/p/memcached/issues/192

• Ubuntu update for Memcached
• Debian update for memcached
• SUSE Linux update for memcached
• SUSE Linux update for memcached
• Buffer access with incorrect length value in Aconf
• Buffer access with incorrect length value in Aconf
• Buffer access with incorrect length value in memcached (Alpine package)
• Buffer access with incorrect length value in Aconf