CVE-2024-20322

A vulnerability in the access control list (ACL) processing on Pseudowire interfaces in the ingress direction of Cisco IOS XR Software could allow an unauthenticated, remote attacker to bypass a configured ACL. This vulnerability is due to improper assignment of lookup keys to internal interface contexts. An attacker could exploit this vulnerability by attempting to send traffic through an affected device. A successful exploit could allow the attacker to access resources behind the affected device that were supposed to be protected by a configured ACL. It has a CVSS v3.1 base score of 5.8 (MEDIUM).

CVE-2024-20322 has a CVSS v3.1 score of 5.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

CVE-2024-20322 affects products from cisco, specifically: 8011-4g24y4h-i, 8101-32fh, 8101-32fh-o, 8101-32h-o, 8102-28fh-dpu-o, 8102-64h, 8102-64h-o, 8111-32eh-o, 8122-64eh-o, 8122-64ehf-o, 8201, 8201-24h8fh, 8201-32fh, 8201-32fh-o, 8202, 8202-32fh-m, 8212-48fh-m, 8404, 8501-sys-mt, 8608, 8700, 8711-32fh-m, 8712-mod-m, 8804, 8808, 8812, 8818, ios_xr, ncs_540-12z20g-sys-a, ncs_540-12z20g-sys-d, ncs_540-24q2c2dd-sys, ncs_540-24q8l2dd-sys, ncs_540-24z8q2c-sys, ncs_540-28z4c-sys-a, ncs_540-28z4c-sys-d, ncs_540-6z14s-sys-d, ncs_540-6z18g-sys-a, ncs_540-6z18g-sys-d, ncs_540-acc-sys, ncs_540-fh-agg, ncs_540-fh-csr-sys, ncs_540x-12z16g-sys-a, ncs_540x-12z16g-sys-d, ncs_540x-16z4g8q2c-a, ncs_540x-16z4g8q2c-d, ncs_540x-16z8q2c-d, ncs_540x-4z14g2q-a, ncs_540x-4z14g2q-d, ncs_540x-6z18g-sys-a, ncs_540x-6z18g-sys-d, ncs_540x-8z16g-sys-a, ncs_540x-8z16g-sys-d, ncs_540x-acc-sys, ncs_5501, ncs_5501-se, ncs_5502, ncs_5502-se, ncs_5504, ncs_5508, ncs_5516, ncs_55a1-24h, ncs_55a1-24q6h-s, ncs_55a1-24q6h-ss, ncs_55a1-36h, ncs_55a1-36h-se, ncs_55a1-48q6h, ncs_55a2-mod-hd-s, ncs_55a2-mod-s, ncs_55a2-mod-se-s, ncs_560-4, ncs_560-7, ncs_57b1-5dse-sys, ncs_57b1-6d24-sys, ncs_57c1-48q6-sys, ncs_57c3-mod-sys, ncs_57d2-18dd-sys. Check the affected products table above for specific version ranges.

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.