CVE-2015-8313

Name: CVE-2015-8313
Creator: NVD / NIST
Published: 2019-12-20T14:15:11.523+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.9/10EPSS 1.69%

Last modified Jun 17, 2026

CVE-2015-8313 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. GnuTLS incorrectly validates the first byte of padding in CBC modes. EPSS estimates a 1.69% chance of exploitation in the next 30 days.

Description

GnuTLS incorrectly validates the first byte of padding in CBC modes

Metrics

CVSS 3.1

5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.69%

74.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-203

Affected Software

Vendor	Product	Versions
Gnu	Gnutls	>= 2.0.0, <= 2.12.24
Debian	Debian Linux	7.0
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0

References

http://www.debian.org/security/2015/dsa-3408Third Party Advisory
http://www.securityfocus.com/archive/1/537012/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/bid/78327Third Party Advisory, VDB Entry
https://blog.hboeck.de/archives/877-A-little-POODLE-left-in-GnuTLS-old-versions.htmlThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2015-8313Issue Tracking, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2015-8313Issue Tracking, Patch, Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2015-8313Third Party Advisory
http://www.debian.org/security/2015/dsa-3408Third Party Advisory
http://www.securityfocus.com/archive/1/537012/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/bid/78327Third Party Advisory, VDB Entry
https://blog.hboeck.de/archives/877-A-little-POODLE-left-in-GnuTLS-old-versions.htmlThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2015-8313Issue Tracking, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2015-8313Issue Tracking, Patch, Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2015-8313Third Party Advisory

Timeline

Published: Dec 20, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2015-8313?

GnuTLS incorrectly validates the first byte of padding in CBC modes

How severe is CVE-2015-8313?

CVE-2015-8313 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 1.69% probability of exploitation in the next 30 days.

How do I fix CVE-2015-8313?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2015-8313?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST