SB2020051509 - Gentoo update for LIVE555 Media Server
Published: May 15, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 6 secuirty vulnerabilities.
1) Stack-based buffer overflow (CVE-ID: CVE-2018-4013)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists the HTTP packet parsing functionality of LIVE555 RTSP Server library that analyzes HTTP headers for RTSP tunneling over HTTP due to stack-based buffer overflow when handling malicious input. A remote attacker can supply a speciallycrafted packet containing multiple “Accept:” or “x-sessioncookie” strings, trigger memory corruption in the function “lookForHeader and execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
2) Use-after-free (CVE-ID: CVE-2019-15232)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error in GenericMediaServer::createNewClientSessionWithId() when generating client session identifiers, which is mishandled by the MPEG1or2 and Matroska file demultiplexors. A remote attacker can execute arbitrary code on the target system.
3) Input validation error (CVE-ID: CVE-2019-6256)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a call to an incorrect virtual function pointer in the readSocket function in GroupsockHelper.cpp. A remote attacker 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.
4) Use-after-free (CVE-ID: CVE-2019-7314)
The vulnerability allows a remote attacker to cause DoS condition.
The vulnerability exists due to use-after-free error when mishandling of the termination of an RTSP stream after RTP/RTCP-over-RTSP has been set up. A remote attacker can trigger segmentation fault and cause the RTSP server to crash.
5) Buffer overflow (CVE-ID: CVE-2019-7733)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due a buffer overflow condition in the handleRequestBytes function. A remote attacker can send a malicious HTTP packet and perform denial of service attack.
6) Input validation error (CVE-ID: CVE-2019-9215)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in the parseAuthorizationHeader() function. A remote attacker can perform a denial of service (DoS) attack against application using the vulnerable version of Live555 codec library.
Remediation
Install update from vendor's website.