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Vulnerability record · CVE-2019-6256 · published 14 January 2019

CVE-2019-6256: Live555 media server vulnerability

Live555 · Live555 Media Server

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.

9.8 CVSS 3.0 Critical EPSS 2.4% · top 16.4% CWE-755 · CWE-755
9.8CVSS 3.0 base score, v2 7.5
2.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
10References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/rgaufman/live555/issues/19 ExploitThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00037.html Mailing ListThird Party Advisory
https://seclists.org/bugtraq/2019/Mar/22 Issue TrackingMailing ListThird Party Advisory
https://security.gentoo.org/glsa/202005-06
https://www.debian.org/security/2019/dsa-4408 Third Party Advisory
https://github.com/rgaufman/live555/issues/19 ExploitThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/02/msg00037.html Mailing ListThird Party Advisory
https://seclists.org/bugtraq/2019/Mar/22 Issue TrackingMailing ListThird Party Advisory
https://security.gentoo.org/glsa/202005-06
https://www.debian.org/security/2019/dsa-4408 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-6256), CISA KEV, FIRST EPSS (scores of 2026-10-07). This page is refreshed as NVD updates the record.