SB2026100646 - Multiple vulnerabilities in envoy

Description

This security bulletin contains information about 2 vulnerabilities.

1) NULL pointer dereference (CVE-ID: N/A)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

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

The vulnerability exists due to a null pointer dereference in KeySources::Source::removeKey in the api_key_auth HTTP filter when stripping a query key source from a request without a :path header. A remote user can send a path-less CONNECT request with a valid API key to cause a denial of service.

Exploitation requires forwarding.hide_credentials to be enabled and at least two key sources to be configured, including a query key source.

2) NULL pointer dereference (CVE-ID: N/A)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: 8.7 [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]

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

The vulnerability exists due to a null pointer dereference in the OAuth2 HTTP filter when processing a path-less HTTP CONNECT request. A remote attacker can send a path-less HTTP CONNECT request to cause a denial of service.

Exploitation requires reaching a listener whose HTTP filter chain includes the OAuth2 filter.

Remediation

Install update from vendor's website.

References

• https://github.com/envoyproxy/envoy/security/advisories/GHSA-47vj-9r25-wv5j
• https://github.com/envoyproxy/envoy/security/advisories/GHSA-8vc2-jrm4-835w