CVE-2017-9951

The try_read_command function in memcached.c in memcached before 1.4.39 allows remote attackers to cause a denial of service (segmentation fault) via a request to add/set a key, which makes a comparison between signed and unsigned int and triggers a heap-based buffer over-read. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-8705.

The try_read_command function in memcached.c in memcached before 1.4.39 allows remote attackers to cause a denial of service (segmentation fault) via a request to add/set a key, which makes a comparison between signed and unsigned int and triggers a heap-based buffer over-read. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-8705.

The try_read_command function in memcached.c in memcached before 1.4.39 allows remote attackers to cause a denial of service (segmentation fault) via a request to add/set a key, which makes a comparison between signed and unsigned int and triggers a heap-based buffer over-read (CVE-2017-9951).

These are all security issues fixed in the memcached-1.6.9-2.3 package on the GA media of openSUSE Tumbleweed.

This update for memcached fixes the following issues:

Security issues fixed:

• CVE-2011-4971: remote DoS (bsc#817781).
• CVE-2013-0179: DoS when printing out keys to be deleted in verbose mode (bsc#798458).
• CVE-2013-7239: SASL authentication allows wrong credentials to access memcache (bsc#857188).
• CVE-2013-7290: remote DoS (segmentation fault) via a request to delete a key (bsc#858677).
• CVE-2013-7291: remote DoS (crash) via a request that triggers 'unbounded key print' (bsc#858676).
• CVE-2016-8704: Server append/prepend remote code execution (bsc#1007871).
• CVE-2016-8705: Server update remote code execution (bsc#1007870).
• CVE-2016-8706: Server ASL authentication remote code execution (bsc#1007869).
• CVE-2017-9951: Heap-based buffer over-read in try_read_command function (incomplete fix for CVE-2016-8705) (bsc#1056865).

This update for memcached fixes the following issues:

Security issues fixed:

• CVE-2011-4971: remote DoS (bsc#817781).
• CVE-2013-0179: DoS when printing out keys to be deleted in verbose mode (bsc#798458).
• CVE-2013-7239: SASL authentication allows wrong credentials to access memcache (bsc#857188).
• CVE-2013-7290: remote DoS (segmentation fault) via a request to delete a key (bsc#858677).
• CVE-2013-7291: remote DoS (crash) via a request that triggers 'unbounded key print' (bsc#858676).
• CVE-2016-8704: Server append/prepend remote code execution (bsc#1007871).
• CVE-2016-8705: Server update remote code execution (bsc#1007870).
• CVE-2016-8706: Server ASL authentication remote code execution (bsc#1007869).
• CVE-2017-9951: Heap-based buffer over-read in try_read_command function (incomplete fix for CVE-2016-8705) (bsc#1056865).

This update for memcached fixes the following issues:

• CVE-2017-9951: Fixed heap-based buffer over-read in try_read_command function which allowed remote attackers to cause a denial of service attack (bsc#1056865).

This update fixes the following issues:

• CVE-2016-8705: Server update remote code execution (bsc#1007870).
• CVE-2017-9951: Heap-based buffer over-read in try_read_command function (incomplete fix for CVE-2016-8705) (bsc#1056865).

Daniel Shapira discovered an integer overflow issue in Memcached. A remote attacker could use this to cause a denial of service (daemon crash). (CVE-2017-9951)

It was discovered that Memcached listened to UDP by default. A remote attacker could use this as part of a distributed denial of service attack. (CVE-2018-1000115)