CVE-2022-43755highCWE-331

CVE-2022-43755: high-severity vulnerability in SUSE Rancher

Rancher: Non-random authentication token

Published · Updated

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.1epss 1.7%
exploitation probability
1.7%top 23% of all CVEs
observed exploitation
nono source reports it
In short

Rancher generates authentication tokens with insufficient randomness, allowing attackers who know an old token to predict or reuse it even after renewal. This undermines the security of token-based authentication.

Technical detail

CWE-331 (Insufficient Entropy) in Rancher's cattle-token generation enables attackers with knowledge of a previous token to infer or continue exploiting subsequent tokens due to weak randomization. The vulnerability affects token renewal mechanisms, allowing persistence of unauthorized access despite token rotation. Affected versions: Rancher <2.6.10 and <2.7.1.

Summary generated and translated by AI from the official description.
A Insufficient Entropy vulnerability in SUSE Rancher allows attackers that gained knowledge of the cattle-token to continue abusing this even after the token was renewed. This issue affects: SUSE Rancher Rancher versions prior to 2.6.10; Rancher versions prior to 2.7.1.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:H
Affected products
SUSE · Rancher
Related CVEs — SUSE Rancher

In the same product, most dangerous first.

CVE-2021-36782CRITICALRancher: Plaintext storage and exposure of credentials in Rancher API and cluster.management.cattle.io objectEPSS 4.2%CVE-2022-31249HIGH[RANCHER] OS command injection in Rancher and FleetEPSS 3.8%CVE-2021-25313HIGHRancher: XSS on /v3/cluster/EPSS 1.5%CVE-2026-44939CRITICALCommand injection through unsanitized YAML parameter in RancherEPSS 1.3%CVE-2021-36776HIGHSteve API proxy impersonationEPSS 1.1%CVE-2022-43758HIGHRancher: Command injection in Git packageEPSS 1.0%
References
https://bugzilla.suse.com/show_bug.cgi?id=1205297