CVE-2023-27478 Disclosure of unrelated data in libmemcached-awesome
An attacker can read unrelated cached data if a previous request timed out due to a low POLL_TIMEOUT setting in libmemcached-awesome.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-27478?
CVE-2023-27478 is a medium-severity vulnerability in awesomized libmemcached, published on 7 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-200
Which versions are affected by CVE-2023-27478?
2 open source packages ship an affected version, including libmemcached and memcached. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
libmemcached Bitnami | From 1.0.18 | 1.1.4 |
memcached Bitnami | From 1.0.18 | 1.1.4 |
Products include Awesome Libmemcached.
How do I fix CVE-2023-27478?
Upgrade libmemcached to 1.1.4 or later.
Is CVE-2023-27478 being exploited?
There is no known exploitation of CVE-2023-27478 in the wild and no public exploit code.
Sources
Also known as AZL-25584, AZL-34932, BIT-libmemcached-2023-27478, BIT-memcached-2023-27478, DEBIAN-CVE-2023-27478, GHSA-wwmh-39wj-fx59.