SB2026040351 - openEuler 22.03 LTS SP4 update for squid

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Out-of-bounds read (CVE-ID: CVE-2026-33515)

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to improper input validation in ICP message handling when processing ICP traffic. A remote attacker can send a specially crafted ICP request to disclose small amounts of memory potentially containing sensitive information.

The attack is limited to Squid deployments that explicitly enable ICP support (i.e., configure a non-zero icp_port).

2) Use After Free (CVE-ID: CVE-2026-33526)

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to heap use-after-free in ICP request handling when processing ICP traffic. A remote attacker can send a specially crafted ICP request to cause a denial of service.

The attack is limited to Squid deployments that have ICP support enabled via a non-zero icp_port configuration.

Remediation

Install update from vendor's website.

References

• https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-1799