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CVE-2019-6256

A Denial of Service issue was discovered in the LIVE555 Streaming Media libraries as used in...

9.8 CriticalFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.44%Up 0.9 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 9.8

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.

Record
CVE-2019-6256
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-755
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2019-6256
Updated
2026-11-02
EUVDEUVD-2019-15823 No score

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.

Record
EUVD-2019-15823
Updated
2026-11-03
GitHub AdvisoriesGHSA-j293-2f59-6wr3 9.8

A Denial of Service issue was discovered in the LIVE555 Streaming Media libraries as used in...

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.

Record
GHSA-j293-2f59-6wr3
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-755
Updated
2026-11-02
OSVDEBIAN-CVE-2019-6256 9.8

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.

Record
DEBIAN-CVE-2019-6256
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2019-6256 9.8

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.

Record
UBUNTU-CVE-2019-6256
CVSS 3.0
9.8 CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2019:0058-1 No score

Security update for live555

This update fixes two security issues in live555:

  • CVE-2018-4013: Remote code execution vulnerability (bsc#1114779)
  • CVE-2019-6256: Denial of Service issue with RTSP-over-HTTP tunneling via x-sessioncookie HTTP headers (boo#1121892)

This library is statically linked into VLC. However VLC is not affected because it only uses the live555 library to implement the RTSP client.

Record
openSUSE-SU-2019:0058-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:11023-1 No score

libBasicUsageEnvironment1-2021.08.23-1.2 on GA media

These are all security issues fixed in the libBasicUsageEnvironment1-2021.08.23-1.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11023-1
Updated
2026-11-02
OSVUSN-4853-1 No score

liblivemedia vulnerabilities

It was discovered that liveMedia incorrectly handled certain network packets. An attacker could possibly use this issue to execute arbitrary code. (CVE-2018-4013)

It was discovered that liveMedia incorrectly handled certain network sessions. An attacker could possibly use this issue to cause a denial of service. (CVE-2019-6256)

It was discovered that liveMedia incorrectly handled certain RTSP streamings. An attacker could possiby use this issue to cause a denial of service or other unspecified impact. (CVE-2019-7314)

It was discovered that liveMedia incorrectly handled certain requests. An attacker could possibly use this issue to obtain sensitive information. (CVE-2019-9215)

Record
USN-4853-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
liblivemedia
Debian:14
before 2018.11.26-1, plus listed versions
2004.11.11a-12005.04.01-12005.06.16-12005.07.21-12005.10.05-1
Show 45 moreShow less
2006.03.17-12006.03.17-22007.02.20-12007.02.20-22008.07.25-12008.07.25-22009.11.27-12010.02.10-12010.04.09-12010.11.17-12011.03.14-12011.05.25-12011.06.16-12011.07.08-12011.07.21-12011.08.22-12011.09.02-12011.12.23-12012.02.04-12012.02.29-12012.02.29-22012.04.04-12012.04.21-12012.05.03-12012.05.03-1~bpo60+12012.05.17-12012.05.17-1+wheezy12012.05.17-1~bpo60+12012.08.31-12012.10.24-12012.11.16-12012.11.30-12013.01.05-12013.01.05-22013.01.05-32013.01.15-12013.04.30-12013.10.25-12014.01.13-12015.12.22-12016.01.12-12016.01.16-12016.01.20-12016.01.29-12016.01.29-2
2018.11.26-1
liblivemedia
Debian:8
before 2014.01.13-1+deb8u2, plus listed versions
2014.01.13-12014.01.13-1+deb8u1
2014.01.13-1+deb8u2
liblivemedia
Debian:9
before 2016.11.28-1+deb9u2, plus listed versions
2016.11.28-12016.11.28-1+deb9u1
2016.11.28-1+deb9u2
liblivemedia
Ubuntu:Pro:16.04:LTS
before 2016.02.09-1ubuntu0.1~esm1, plus listed versions
2014.01.13-12016.01.29-22016.02.09-1
2016.02.09-1ubuntu0.1~esm1
liblivemedia
Ubuntu:Pro:18.04:LTS
before 2018.02.18-1ubuntu0.1~esm1, plus listed versions
2017.07.18-12017.09.12-1ubuntu12017.10.28-22018.01.29-12018.02.18-1
2018.02.18-1ubuntu0.1~esm1
live555
SUSE:Package Hub 15
before 2018.12.14-bp150.3.3.1
2018.12.14-bp150.3.3.1
live555
openSUSE:Leap 15.0
before 2018.12.14-bp150.3.3.1
2018.12.14-bp150.3.3.1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-6256 is a critical vulnerability (CVSS 9.8) in Live555 Media Server, published January 14, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.44%, the 84th percentile. Fixed in liblivemedia 2018.11.26-1.

References

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