Live555
CVE-2019-6256
CRITICAL
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A10:2025 - Mishandling of Exceptional Conditions
ASVS 5.0
V16 - Security Logging and Error Handling Exception handling procedures
|
| Impact | CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the critical-severity affected system. |
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Alert meAnalysisAI
A Denial of Service issue was discovered in the LIVE555 Streaming Media libraries as used in Live555 Media Server 0.93. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
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Technical ContextAI · show details
This vulnerability is classified under CWE-755. 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. Affected products include: Live555 Live555 Media Server, Debian Debian Linux.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.
Affected Products (CPE)NVD
A heap-use-after-free vulnerability was found in live555 version 2023.05.10 while handling the SETUP. Rated critical sev
An exploitable code execution vulnerability exists in the HTTP packet-parsing functionality of the LIVE555 RTSP server l
The parseRTSPRequestString function in Live Networks Live555 Streaming Media 2013.11.26, as used in VideoLAN VLC Media P
Authorization bypass in LIVE555 RTSP server (versions before 2026.04.22) allows remote unauthenticated attackers to hija
Live555 through 1.08 has a memory leak in AC3AudioStreamParser for AC3 files. Rated high severity (CVSS 7.5), this vulne
Live555 through 1.08 mishandles huge requests for the same MP3 stream, leading to recursion and s stack-based buffer ove
In Live555 0.95, there is a buffer overflow via a large integer in a Content-Length HTTP header because handleRequestByt
A use-after-free in the MPEG1or2Demux::newElementaryStream() function of Live555 Streaming Media v2018.09.02 allows atta
A NULL pointer dereference in the ADTSAudioFileServerMediaSubsession::createNewRTPSink() function of Live555 Streaming M
A heap overflow in the MatroskaFile::createRTPSinkForTrackNumber() function of Live555 Streaming Media v2018.09.02 allow
A use-after-free in the ADTSAudioFileSource::samplingFrequency() function of Live555 Streaming Media v2018.09.02 allows
A buffer overflow in the getSideInfo2() function of Live555 Streaming Media v2018.09.02 allows attackers to cause a Deni
Exploit-DB