#VU79678 Information disclosure in libmemcached - CVE-2023-27478

Vulnerability identifier: #VU79678

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-27478

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libmemcached
Other software / Other software solutions

Vendor: libmemcached.org

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to an error that results in returning data for a previously requested key, if that previous request timed out due to a low "POLL_TIMEOUT". A remote attacker can gain unauthorized access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libmemcached: 1.0.18 - 1.1.3

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External links
https://github.com/awesomized/libmemcached/security/advisories/GHSA-wwmh-39wj-fx59
https://github.com/awesomized/libmemcached/commit/48dcc61a
https://github.com/awesomized/libmemcached/releases/tag/1.1.4
https://github.com/php-memcached-dev/php-memcached/issues/531

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.