CVE-2019-6256

Name: CVE-2019-6256
Creator: NVD / NIST
Published: 2019-01-14T08:29:00.427+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.41%

Last modified Jun 17, 2026

CVE-2019-6256 is a vulnerability of currently unknown severity. A Denial of Service issue was discovered in the LIVE555 Streaming Media libraries as used in Live555 Media Server 0.93. It can cause an RTSPServer crash in handleHTTPCmd_TunnelingPOST, when RTSP-over-HTTP tunneling is supported, via x-sessioncookie HTTP headers in a GET request and a POST request within the same TCP session. EPSS estimates a 2.41% chance of exploitation in the next 30 days.

Description

A Denial of Service issue was discovered in the LIVE555 Streaming Media libraries as used in Live555 Media Server 0.93. It can cause an RTSPServer crash in handleHTTPCmd_TunnelingPOST, when RTSP-over-HTTP tunneling is supported, via x-sessioncookie HTTP headers in a GET request and a POST request within the same TCP session. This occurs because of a call to an incorrect virtual function pointer in the readSocket function in GroupsockHelper.cpp.

Metrics

EPSS Probability

2.41%

82.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-755

Affected Software

Vendor	Product	Versions
Live555	Live555 Media Server	0.93
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0

References

https://github.com/rgaufman/live555/issues/19Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00037.htmlMailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/Mar/22Issue Tracking, Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/202005-06
https://www.debian.org/security/2019/dsa-4408Third Party Advisory
https://github.com/rgaufman/live555/issues/19Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00037.htmlMailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/Mar/22Issue Tracking, Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/202005-06
https://www.debian.org/security/2019/dsa-4408Third Party Advisory

Timeline

Published: Jan 14, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-6256?

How severe is CVE-2019-6256?

Severity scoring for CVE-2019-6256 is pending analysis. The EPSS model estimates a 2.41% probability of exploitation in the next 30 days.

How do I fix CVE-2019-6256?

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-2019-6256?

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

Scan your code now

Source: NVD / NIST