Information disclosure in Awesome Libmemcached
CVE-2023-27478
libmemcached-awesome is an open source C/C++ client library and tools for the memcached server. `libmemcached` could return data for a previously requested key, if that previous request timed out due to a low `POLL_TIMEOUT`. This issue has been addressed in version 1.1.4. Users are advised to upgrade. There are several ways to workaround or lower the probability of this bug affecting a given deployment. 1: use a reasonably high `POLL_TIMEOUT` setting, like the default. 2: use separate libmemcached connections for unrelated data. 3: do not re-use libmemcached connections in an unknown state.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.007 (53.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Awesome Libmemcached
- Awesomized Libmemcached — versions > 1.0.18, < 1.1.4
Weakness classification (CWE)
References
- github.com/awesomized/libmemcached/security/advisories/GHSA-wwmh-39wj-fx59 (Patch, Third Party Advisory)
- github.com/php-memcached-dev/php-memcached/issues/531 (Exploit, Patch, Third Party Advisory, Issue Tracking)
- github.com/awesomized/libmemcached/commit/48dcc61a (Patch)
- github.com/awesomized/libmemcached/releases/tag/1.1.4 (Release Notes)
Frequently asked questions
- What is CVE-2023-27478?
- CVE-2023-27478 is a medium-severity vulnerability in Awesome Libmemcached, classified under Information Disclosure. CVSS score: 6.5/10. Published 2023-03-07.
- How severe is CVE-2023-27478?
- Medium severity. CVSS v3 base score is 6.5 out of 10.