CVE-2016-4456: Input Validation
First published: Tue Jun 07 2016(Updated: )
It was reported that gnutls 3.4.12 uses an environment variable (GNUTLS_KEYLOGFILE) to write the keys of the running sessions. This variable is obtained insecurely via getenv(), meaning that any set-uid program using gnutls can be used to overwrite any file on the filesystem. Upstream patch: <a href="https://gitlab.com/gnutls/gnutls/compare/fb2a6baef79f4aadfd95e657fe5a18da20a1410e...86076c9b17b9a32b348cafb8b724f57f7da64d58">https://gitlab.com/gnutls/gnutls/compare/fb2a6baef79f4aadfd95e657fe5a18da20a1410e...86076c9b17b9a32b348cafb8b724f57f7da64d58</a> External References: <a href="http://gnutls.org/security.html#GNUTLS-SA-2016-1">http://gnutls.org/security.html#GNUTLS-SA-2016-1</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/gnutls | <3.4.13 | 3.4.13 |
| GNU GnuTLS | =3.4.12 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2016/06/07/6
- https://bugzilla.redhat.com/show_bug.cgi?id=1343505
- https://gitlab.com/gnutls/gnutls/compare/fb2a6baef79f4aadfd95e657fe5a18da20a1410e...86076c9b17b9a32b348cafb8b724f57f7da64d58
- http://gnutls.org/security.html#GNUTLS-SA-2016-1
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1343508
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1343342
- https://www.gnutls.org/security.html#GNUTLS-SA-2016-1
- https://gitlab.com/gnutls/gnutls/commit/b0a3048e56611a2deee4976aeba3b8c0740655a6
- agent/references
- agent/type
- agent/first-publish-date
- collector/nvd-index
- agent/software-canonical-lookup-request
- agent/author
- agent/weakness
- agent/severity
- agent/softwarecombine
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2016-4456
- agent/software-canonical-lookup
- agent/tags
- agent/trending
- vendor/gnu
- canonical/gnu gnutls
- version/gnu gnutls/3.4.12
- package-manager/redhat