Cisco IOS XR Software Access Control List Bypass Vulnerability
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
A vulnerability in the access control list (ACL) processing in the egress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability exists because certain packets are handled incorrectly when they are received on an ingress interface on one line card and destined out of an egress interface on another line card where the egress ACL is configured. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to bypass an egress ACL on the affected device. For more information about this vulnerability, see the section of this advisory. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Cisco Cisco IOS XR Software
6.5.3, 6.5.2, 6.5.92, 6.5.1, 6.6.2, 7.0.1, 6.6.25, 6.6.1, 6.5.93, 7.1.1, 7.0.90, 6.6.3, 7.0.2, 7.2.1, 7.1.2, 7.0.11, 7.0.12, 7.0.14, 6.6.4, 7.2.12, 7.3.1, 7.4.1, 7.2.2, 7.3.15, 7.3.16, 7.3.2, 7.5.1, 7.6.1, 7.5.2, 7.8.1, and 31 more