CVE-2014-9421 — Use After Free in Kerberos 5

CWE-416 — Use After Free9 documents8 sources
Severity
9.0CRITICALNVD
EPSS
5.4%
top 9.90%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
MIT Krb5MIT Kerberos 5
Timeline
PublishedFeb 19
Latest updateMay 13

Description

The auth_gssapi_unwrap_data function in lib/rpc/auth_gssapi_misc.c in MIT Kerberos 5 (aka krb5) through 1.11.5, 1.12.x through 1.12.2, and 1.13.x before 1.13.1 does not properly handle partial XDR deserialization, which allows remote authenticated users to cause a denial of service (use-after-free and double free, and daemon crash) or possibly execute arbitrary code via malformed XDR data, as demonstrated by data sent to kadmind.

CVSS vector

AV:N/AC:L/C:C/I:C/A:CExploitability: 8.0 | Impact: 10.0

Affected Packages2 packages

▶Debianmit/krb5< 1.12.1+dfsg-17+3
▶NVDmit/kerberos_510 versions+9

🔴Vulnerability Details

3
GHSA
GHSA-cv75-v3vc-j2vj: The auth_gssapi_unwrap_data function in lib/rpc/auth_gssapi_misc↗2022-05-13
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CVEList
CVE-2014-9421: The auth_gssapi_unwrap_data function in lib/rpc/auth_gssapi_misc↗2015-02-19
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OSV
CVE-2014-9421: The auth_gssapi_unwrap_data function in lib/rpc/auth_gssapi_misc↗2015-02-19
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📋Vendor Advisories

3
Ubuntu
Kerberos vulnerabilities↗2015-02-10
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Red Hat
krb5: kadmind doubly frees partial deserialization results (MITKRB5-SA-2015-001)↗2015-02-03
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Debian
CVE-2014-9421: krb5 - The auth_gssapi_unwrap_data function in lib/rpc/auth_gssapi_misc.c in MIT Kerber...↗2014
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💬Community

2
Bugzilla
CVE-2014-5352 CVE-2014-9421 CVE-2014-9423 CVE-2014-9422 krb5: various flaws [fedora-all]↗2015-02-03
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Bugzilla
CVE-2014-9421 krb5: kadmind doubly frees partial deserialization results (MITKRB5-SA-2015-001)↗2015-01-07
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CVE-2014-9421 — Use After Free in MIT Kerberos 5 | cvebase