SB2023033113 - Multiple vulnerabilities in MediaWiki
Published: March 31, 2023 Updated: July 6, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Information disclosure (CVE-ID: CVE-2023-29141)
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 way application handles the X-Forwarded-For header. A remote attacker can use the X-Forwarded-For header to brute-force the autoblocked IP addresses.
2) Improper Authentication (CVE-ID: N/A)
CWE-ID: CWE-287 - Improper Authentication
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an error in OATHAuth implementation. A remote attacker can perform a replay attack when MediaWiki is configured without ObjectCache.
3) Incorrect regular expression (CVE-ID: CVE-2020-36649)
CWE-ID: CWE-185 - Incorrect Regular Expression
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 regular expression denial of service (ReDoS) attack.
The vulnerability exists due to usage of a very complex regular expression in papaparse.js. A remote attacker can pass specially crafted input to the application and consume extensive system resources, resulting in a denial of service condition.
Remediation
Install update from vendor's website.