Missing Required Cryptographic Step The advisory has been revoked - it doesn't affect any version of package libreswan-debugsource (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL8-LIBRESWANDEBUGSOURCE-1329054
- published26 Jul 2021
- disclosed14 Aug 2018
Introduced: 14 Aug 2018
CVE-2018-5389 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libreswan-debugsource package and not the libreswan-debugsource package as distributed by RHEL.
The Internet Key Exchange v1 main mode is vulnerable to offline dictionary or brute force attacks. Reusing a key pair across different versions and modes of IKE could lead to cross-protocol authentication bypasses. It is well known, that the aggressive mode of IKEv1 PSK is vulnerable to offline dictionary or brute force attacks. For the main mode, however, only an online attack against PSK authentication was thought to be feasible. This vulnerability could allow an attacker to recover a weak Pre-Shared Key or enable the impersonation of a victim host or network.
References
- https://www.kb.cert.org/vuls/id/857035
- https://access.redhat.com/security/cve/CVE-2018-5389
- https://blogs.cisco.com/security/great-cipher-but-where-did-you-get-that-key
- https://web-in-security.blogspot.com/2018/08/practical-dictionary-attack-on-ipsec-ike.html
- https://www.usenix.org/system/files/conference/usenixsecurity18/sec18-felsch.pdf
- https://my.f5.com/manage/s/article/K42378447