CVE-2019-3829: Double Free
First published: Wed Feb 13 2019(Updated: )
A flaw was found in gnutls 3.5.8 or later. A use-after-free in multi-threaded-clients and a double-free vulnerability in single-threaded clients because _gnutls_x509_get_signature does not clear signature->data in the cleanup path. Upstream bug: <a href="https://gitlab.com/gnutls/gnutls/issues/694">https://gitlab.com/gnutls/gnutls/issues/694</a>
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/gnutls | <3.6.7 | 3.6.7 |
| GNU GnuTLS | >=3.5.8<3.6.7 | |
| Fedoraproject Fedora | ||
| debian/gnutls28 | 3.7.1-5+deb11u5 3.7.1-5+deb11u6 3.7.9-2+deb12u3 3.8.8-2 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3829
- https://gitlab.com/gnutls/gnutls/issues/694
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A3ETBUFBB4G7AITAOUYPGXVMBGVXKUAN/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WRSOL66LHP4SD3Y2ECJDOGT4K663ECDU/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L7TJIBRJWGWSH6XIO2MXIQ3W6ES4R6I4/
- https://security.gentoo.org/glsa/201904-14
- https://www.gnutls.org/security-new.html#GNUTLS-SA-2019-03-27
- http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00017.html
- https://usn.ubuntu.com/3999-1/
- https://security.netapp.com/advisory/ntap-20190619-0004/
- https://access.redhat.com/errata/RHSA-2019:3600
- https://launchpad.net/bugs/cve/CVE-2019-3829
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1693210
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1693211
- https://gitlab.com/gnutls/gnutls/commit/ad27713bef613e6c4600a0fb83ae48c6d390ff5b
- https://bugzilla.redhat.com/show_bug.cgi?id=1677048
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A3ETBUFBB4G7AITAOUYPGXVMBGVXKUAN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L7TJIBRJWGWSH6XIO2MXIQ3W6ES4R6I4/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WRSOL66LHP4SD3Y2ECJDOGT4K663ECDU/
- https://gitlab.com/gnutls/gnutls/commit/d39778e43d1674cb3ab3685157fd299816d535c0
- https://gitlab.com/gnutls/gnutls/commit/372821c883a3d36ed3ed683844ad9d90818f6392
- https://gitlab.com/gnutls/gnutls/commit/6b5cbc9ea5bdca704bdbe2f8fb551f720d634bc6
- https://security-tracker.debian.org/tracker/CVE-2019-3829
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3829
- https://nvd.nist.gov/vuln/detail/CVE-2019-3829
- https://ubuntu.com/security/CVE-2019-3829
Frequently Asked Questions
What is CVE-2019-3829?
CVE-2019-3829 is a memory corruption vulnerability in gnutls versions from 3.5.8 before 3.6.7.
Which software is affected by CVE-2019-3829?
Any client or server application that verifies X.509 certificates with GnuTLS 3.5.8 or later is affected.
What is the severity of CVE-2019-3829?
CVE-2019-3829 has a high severity with a CVSS score of 7.5.
How do I fix CVE-2019-3829?
To fix CVE-2019-3829, update to gnutls version 3.6.7 or later.
Where can I find more information about CVE-2019-3829?
You can find more information about CVE-2019-3829 at the following references: [1](http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00017.html), [2](https://access.redhat.com/errata/RHSA-2019:3600), [3](https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3829).
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