SB2023050442 - Gentoo update for Tor
Published: May 4, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Reachable Assertion (CVE-ID: CVE-2021-38385)
CWE-ID: CWE-617 - Reachable Assertion
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a reachable assertion caused by a behavior mismatch between our batch-signature verification code and our single-signature verification code. A remote attacker can trigger assertion failure and perform a denial of service attack.
2) Resource management error (CVE-ID: CVE-2022-33903)
CWE-ID: CWE-399 - Resource Management Errors
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources when processing wedging of RTT estimation. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
3) Information disclosure (CVE-ID: CVE-2023-23589)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a logical error within the process_socks4_request() function in src/core/proto/proto_socks.c, which leaks DNS queries in case the "SafeSocks=1". A remote attacker can gain unauthorized access to sensitive information.
Remediation
Install update from vendor's website.