- Vulnerability/
- USN-3183-2
USN-3183-2: GnuTLS vulnerability
First published: Mon Mar 20 2017(Updated: )
USN-3183-1 fixed CVE-2016-8610 in GnuTLS in Ubuntu 16.04 LTS and Ubuntu 16.10. This update provides the corresponding update for Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. Original advisory details: Stefan Buehler discovered that GnuTLS incorrectly verified the serial length of OCSP responses. A remote attacker could possibly use this issue to bypass certain certificate validation measures. This issue only applied to Ubuntu 16.04 LTS. (CVE-2016-7444) Shi Lei discovered that GnuTLS incorrectly handled certain warning alerts. A remote attacker could possibly use this issue to cause GnuTLS to hang, resulting in a denial of service. This issue has only been addressed in Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-8610) It was discovered that GnuTLS incorrectly decoded X.509 certificates with a Proxy Certificate Information extension. A remote attacker could use this issue to cause GnuTLS to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2017-5334) It was discovered that GnuTLS incorrectly handled certain OpenPGP certificates. A remote attacker could possibly use this issue to cause GnuTLS to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-5335, CVE-2017-5336, CVE-2017-5337)
| Affected Software | Affected Version | How to fix |
|---|---|---|
| All of | ||
| ubuntu/libgnutls26 | <2.12.23-12ubuntu2.7 | 2.12.23-12ubuntu2.7 |
| Ubuntu gir1.2-packagekitglib-1.0 | =14.04 | |
| All of | ||
| ubuntu/libgnutls26 | <2.12.14-5ubuntu3.14 | 2.12.14-5ubuntu3.14 |
| Ubuntu gir1.2-packagekitglib-1.0 | =12.04 |
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Reference Links
- https://ubuntu.com/security/CVE-2016-8610
- https://ubuntu.com/security/notices/USN-3183-1
- https://ubuntu.com/security/notices/USN-3181-1
- https://launchpad.net/ubuntu/+source/gnutls26/2.12.23-12ubuntu2.7
- https://launchpad.net/ubuntu/+source/gnutls26/2.12.14-5ubuntu3.14
- https://ubuntu.com/security/notices/USN-3183-2 (Advisory)
Frequently Asked Questions
What is the severity of USN-3183-2?
USN-3183-2 addresses a medium-severity vulnerability in GnuTLS related to OCSP serial length verification.
How do I fix USN-3183-2?
To fix USN-3183-2, update the libgnutls26 package to version 2.12.23-12ubuntu2.7 for Ubuntu 14.04 or version 2.12.14-5ubuntu3.14 for Ubuntu 12.04.
What is the affected software in USN-3183-2?
USN-3183-2 affects the libgnutls26 package on Ubuntu versions 12.04 and 14.04.
What is CVE-2016-8610 in relation to USN-3183-2?
CVE-2016-8610 is the identifier for the vulnerability that USN-3183-2 addresses in the GnuTLS library.
Which Ubuntu releases are impacted by USN-3183-2?
USN-3183-2 impacts Ubuntu 12.04 LTS and Ubuntu 14.04 LTS.
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