Skip to content

Disclosure of unrelated data

Moderate
m6w6 published GHSA-wwmh-39wj-fx59 Mar 7, 2023

Package

libmemcached-awesome

Affected versions

>1.0.18 <1.1.4

Patched versions

1.1.4

Description

Impact

libmemcached could return data for a previously requested key, if that previous request timed out due to a low POLL_TIMEOUT.

Patches

Version v1.1.4 with the appropriate patch has already been released.

Workarounds

There are several ways to workaround or lower the probability of this bug affecting you:

  • use a reasonably high POLL_TIMEOUT setting, like the default
  • use separate libmemcached connections for unrelated data
  • do not re-use libmemcached connections in an unknown state

References

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

CVE ID

CVE-2023-27478

Weaknesses

No CWEs

Credits