Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.0.5
Red Hat OpenShift Service Mesh 3.0.5, which is based on the open source Istio project, addresses a variety of problems in a microservice architecture by creating a centralized point of control in an application. Security Fix(es): * istio-proxyv2-rhel9: Use after free in DNS cache (CVE-2025-54588) * istio-proxyv2-rhel9: oAuth2 Filter Signout route will not clear cookies because of missing "secure;" flag (CVE-2025-55162)
AI Analysis
Technical Summary
CVE-2025-54588 is a use-after-free vulnerability in the Envoy proxy component (istio-proxyv2-rhel9) used by Red Hat OpenShift Service Mesh. The flaw occurs in the handling of the DNS cache, where a specific sequence of DNS lookups can cause the Envoy process to crash. This memory corruption could lead to denial of service or potentially allow an attacker to execute arbitrary code by exploiting a write-what-where condition. Red Hat has released OpenShift Service Mesh version 3.0.5 to address this issue.
Potential Impact
The vulnerability can cause the Envoy proxy process to crash, resulting in denial of service. Additionally, the memory corruption may allow an attacker to execute arbitrary code within the affected process, compromising integrity and potentially control of the system. No confidentiality impact is reported. There are no known exploits in the wild at this time.
Mitigation Recommendations
A fix is available in Red Hat OpenShift Service Mesh version 3.0.5. Users are advised to upgrade to this version to remediate the vulnerability. No alternative mitigations meeting Red Hat's criteria are currently available. Refer to the official Red Hat advisory and product documentation for upgrade instructions.
Red Hat Security Advisory: Red Hat OpenShift Service Mesh 3.0.5
Description
Red Hat OpenShift Service Mesh 3.0.5, which is based on the open source Istio project, addresses a variety of problems in a microservice architecture by creating a centralized point of control in an application. Security Fix(es): * istio-proxyv2-rhel9: Use after free in DNS cache (CVE-2025-54588) * istio-proxyv2-rhel9: oAuth2 Filter Signout route will not clear cookies because of missing "secure;" flag (CVE-2025-55162)
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-54588 is a use-after-free vulnerability in the Envoy proxy component (istio-proxyv2-rhel9) used by Red Hat OpenShift Service Mesh. The flaw occurs in the handling of the DNS cache, where a specific sequence of DNS lookups can cause the Envoy process to crash. This memory corruption could lead to denial of service or potentially allow an attacker to execute arbitrary code by exploiting a write-what-where condition. Red Hat has released OpenShift Service Mesh version 3.0.5 to address this issue.
Potential Impact
The vulnerability can cause the Envoy proxy process to crash, resulting in denial of service. Additionally, the memory corruption may allow an attacker to execute arbitrary code within the affected process, compromising integrity and potentially control of the system. No confidentiality impact is reported. There are no known exploits in the wild at this time.
Mitigation Recommendations
A fix is available in Red Hat OpenShift Service Mesh version 3.0.5. Users are advised to upgrade to this version to remediate the vulnerability. No alternative mitigations meeting Red Hat's criteria are currently available. Refer to the official Red Hat advisory and product documentation for upgrade instructions.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2025:16040
- Cve Count
- 2
- Additional Cves
- ["CVE-2025-55162"]
Threat ID: 6a3de72d4853345fc1127f70
Added to database: 06/26/2026, 02:42:53 UTC
Last enriched: 08/16/2026, 15:49:26 UTC
Last updated: 09/10/2026, 19:36:51 UTC
Views: 112
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