Out-of-Bounds The advisory has been revoked - it doesn't affect any version of package krb5 (opens in a new tab)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-UBUNTU2004-KRB5-659461
- published23 Nov 2017
- disclosed23 Nov 2017
Introduced: 23 Nov 2017
CVE-2017-15088 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:20.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream krb5 package and not the krb5 package as distributed by Ubuntu.
plugins/preauth/pkinit/pkinit_crypto_openssl.c in MIT Kerberos 5 (aka krb5) through 1.15.2 mishandles Distinguished Name (DN) fields, which allows remote attackers to execute arbitrary code or cause a denial of service (buffer overflow and application crash) in situations involving untrusted X.509 data, related to the get_matching_data and X509_NAME_oneline_ex functions. NOTE: this has security relevance only in use cases outside of the MIT Kerberos distribution, e.g., the use of get_matching_data in KDC certauth plugin code that is specific to Red Hat.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-15088
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15088
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=871698
- https://security-tracker.debian.org/tracker/CVE-2017-15088
- https://github.com/krb5/krb5/commit/fbb687db1088ddd894d975996e5f6a4252b9a2b4
- https://github.com/krb5/krb5/pull/707
- https://bugzilla.redhat.com/show_bug.cgi?id=1504045
- http://www.securityfocus.com/bid/101594