SB2022093048 - openEuler update for mod_security_crs

Description

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error (CVE-ID: CVE-2022-39958)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/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 filtration rules.

The vulnerability exists due to insufficient validation of the HTTP Range header field with a small byte range. A remote attacker can exfiltrate small and undetectable sections of data by repeatedly submitting an HTTP Range header field with a small byte range.

2) Input validation error (CVE-ID: CVE-2022-39957)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to bypass filtration rules.

The vulnerability exists due to insufficient validation of HTTP Accept header field containing an optional "charset" parameter. A remote attacker can send a specially crafted HTTP request and bypass WAF detection.

Remediation

Install update from vendor's website.

References

• https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-1970