SB2021030132 - Fedora EPEL 7 update for privoxy
Published: March 1, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 8 secuirty vulnerabilities.
1) Memory leak (CVE-ID: CVE-2021-20209)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in the show-status CGI handler when no action files are configured. A remote attacker can force the application to leak memory and perform denial of service attack.
2) Memory leak (CVE-ID: CVE-2021-20210)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in the show-status CGI handler when no filter files are configured. A remote attacker can force the application to leak memory and perform denial of service attack.
3) Memory leak (CVE-ID: CVE-2021-20211)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak when client tags are active. A remote attacker can force the application to leak memory and perform denial of service attack.
4) Memory leak (CVE-ID: CVE-2021-20212)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak if multiple filters are executed and the last one is skipped due to a pcre error. A remote attacker can force the application to leak memory and perform denial of service attack.
5) NULL pointer dereference (CVE-ID: CVE-2021-20213)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error, if accept-intercepted-requests is enabled. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
6) Memory leak (CVE-ID: CVE-2021-20214)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in the client-tags CGI handler when client tags are configured and memory allocations fail. A remote attacker can force the application to leak memory and perform denial of service attack.
7) Memory leak (CVE-ID: CVE-2021-20215)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in the show-status CGI handler when memory allocations fail. A remote attacker can force the application to leak memory and perform denial of service attack.
8) Memory leak (CVE-ID: CVE-2020-35502)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak when a response is buffered and the buffer limit is reached or Privoxy is running out of memory. A remote attacker can force the application to leak memory and perform denial of service attack.
Remediation
Install update from vendor's website.