# CVE-2023-20109 A vulnerability in the Cisco Group Encrypted Transport VPN (GET VPN) feature of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker who has administrative control of either a group member or a key server to execute arbitrary code on an affected device or cause the device to crash. This vulnerability is due to insufficient validation of attributes in the Group Domain of Interpretation (GDOI) and G-IKEv2 protocols of the GET VPN feature. An attacker could exploit this vulnerability by either compromising an installed key server or modifying the configuration of a group member to point to a key server that is controlled by the attacker. A successful exploit could allow the attacker to execute arbitrary code and gain full control of the affected system or cause the affected system to reload, resulting in a denial of service (DoS) condition. For more information, see the Details ["#details"] section of this advisory. - Page: https://www.vulneraibility.com/cve/CVE-2023-20109 - CVSS: 6.6 - Known exploited: yes, in CISA KEV since 2023-10-10; CISA due date 2023-10-31 - EPSS: 2.50% (percentile 84.9) - CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2024-10-23) - Weakness: CWE-787 - Published: 2023-09-27 ## Affected versions - Cisco Cisco IOS XE Software: affected 3.7.0S; 3.7.1S; 3.7.2S; 3.7.3S; 3.7.4S; 3.7.5S; 3.7.6S; 3.7.7S; 3.7.4aS; 3.7.2tS; 3.7.0bS; 3.7.1aS; 3.3.0SG; 3.3.2SG; 3.3.1SG; 3.8.0S; 3.8.1S; 3.8.2S; 3.9.1S; 3.9.0S; 3.9.2S; 3.9.1aS; 3.9.0aS; 3.4.0SG; 3.4.2SG; 3.4.1SG; 3.4.3SG; 3.4.4SG; 3.4.5SG; 3.4.6SG; 3.4.7SG; 3.4.8SG; 3.5.0E; 3.5.1E; 3.5.2E; 3.5.3E; 3.10.0S; 3.10.1S; 3.10.2S; 3.10.3S; 3.10.4S; 3.10.5S; 3.10.6S; 3.10.2tS; 3.10.7S; 3.10.1xbS; 3.10.8S; 3.10.8aS; 3.10.9S; 3.10.10S; 3.11.1S; 3.11.2S; 3.11.0S; 3.11.3S; 3.11.4S; 3.12.0S; 3.12.1S; 3.12.2S; 3.12.3S; 3.12.0aS; 3.12.4S; 3.13.0S; 3.13.1S; 3.13.2S; 3.13.3S; 3.13.4S; 3.13.5S; 3.13.2aS; 3.13.0aS; 3.13.5aS; 3.13.6S; 3.13.7S; 3.13.6aS; 3.13.7aS; 3.13.8S; 3.13.9S; 3.13.10S; 3.6.0E; 3.6.1E; 3.6.2aE; 3.6.2E; 3.6.3E; 3.6.4E; 3.6.5E; 3.6.6E; 3.6.5aE; 3.6.5bE; 3.6.7E; 3.6.8E; 3.6.7bE; 3.6.9E; 3.6.10E; 3.14.0S; 3.14.1S; 3.14.2S; 3.14.3S; 3.14.4S; 3.15.0S; 3.15.1S; 3.15.2S; 3.15.1cS; 3.15.3S; 3.15.4S; 3.16.0S; 3.16.1S; 3.16.1aS; 3.16.2S; 3.16.2aS; 3.16.0cS; 3.16.3S; 3.16.2bS; 3.16.3aS; 3.16.4S; 3.16.4aS; 3.16.4bS; 3.16.5S; 3.16.4dS; 3.16.6S; 3.16.7S; 3.16.6bS; 3.16.7aS; 3.16.7bS; 3.16.8S; 3.16.9S; 3.16.10S; 3.17.0S; 3.17.1S; 3.17.2S; 3.17.1aS; 3.17.3S; 3.17.4S; 16.1.1; 16.1.2; 16.1.3; 16.2.1; 16.2.2; 3.8.0E; 3.8.1E; 3.8.2E; 3.8.3E; 3.8.4E; 3.8.5E; 3.8.5aE; 3.8.6E; 3.8.7E; 3.8.8E; 3.8.9E; 3.8.10E; 16.3.1; 16.3.2; 16.3.3; 16.3.1a; 16.3.4; 16.3.5; 16.3.5b; 16.3.6; 16.3.7; 16.3.8; 16.3.9; 16.3.10; 16.3.11; 16.4.1; 16.4.2; 16.4.3; 16.5.1; 16.5.1a; 16.5.1b; 16.5.2; 16.5.3; 3.18.0aS; 3.18.0S; 3.18.1S; 3.18.2S; 3.18.3S; 3.18.4S; 3.18.0SP; 3.18.1SP; 3.18.1aSP; 3.18.1bSP; 3.18.1cSP; 3.18.2SP; 3.18.2aSP; 3.18.3SP; 3.18.4SP; 3.18.3aSP; 3.18.3bSP; 3.18.5SP; 3.18.6SP; 3.18.7SP; 3.18.8aSP; 3.18.9SP; 3.9.0E; 3.9.1E; 3.9.2E; 16.6.1; 16.6.2; 16.6.3; 16.6.4; 16.6.5; 16.6.4a; 16.6.5a; 16.6.6; 16.6.7; 16.6.8; 16.6.9; 16.6.10; 16.7.1; 16.7.1a; 16.7.1b; 16.7.2; 16.7.3; 16.7.4; 16.8.1; 16.8.1a; 16.8.1b; 16.8.1s; 16.8.1c; 16.8.1d; 16.8.2; 16.8.1e; 16.8.3; 16.9.1; 16.9.2; 16.9.1a; 16.9.1b; 16.9.1s; 16.9.3; 16.9.4; 16.9.3a; 16.9.5; 16.9.5f; 16.9.6; 16.9.7; 16.9.8; 16.10.1; 16.10.1a; 16.10.1b; 16.10.1s; 16.10.1c; 16.10.1e; 16.10.1d; 16.10.2; 16.10.1f; 16.10.1g; 16.10.3; 3.10.0E; 3.10.1E; 3.10.0cE; 3.10.2E; 3.10.3E; 16.11.1; 16.11.1a; 16.11.1b; 16.11.2; 16.11.1s; 16.12.1; 16.12.1s; 16.12.1a; 16.12.1c; 16.12.1w; 16.12.2; 16.12.1y; 16.12.2a; 16.12.3; 16.12.8; 16.12.2s; 16.12.1x; 16.12.1t; 16.12.4; 16.12.3s; 16.12.3a; 16.12.4a; 16.12.5; 16.12.6; 16.12.1z1; 16.12.5a; 16.12.5b; 16.12.1z2; 16.12.6a; 16.12.7; 16.12.9; 3.11.0E; 3.11.1E; 3.11.2E; 3.11.3E; 3.11.1aE; 3.11.4E; 3.11.3aE; 3.11.5E; 3.11.6E; 3.11.7E; 3.11.8E; 17.1.1; 17.1.1a; 17.1.1s; 17.1.1t; 17.1.3; 17.2.1; 17.2.1r; 17.2.1a; 17.2.1v; 17.2.2; 17.2.3; 17.3.1; 17.3.2; 17.3.3; 17.3.1a; 17.3.1w; 17.3.2a; 17.3.1x; 17.3.1z; 17.3.4; 17.3.5; 17.3.4a; 17.3.6; 17.3.4b; 17.3.4c; 17.3.5a; 17.3.5b; 17.3.7; 17.4.1; 17.4.2; 17.4.1a; 17.4.1b; 17.4.2a; 17.5.1; 17.5.1a; 17.5.1c; 17.6.1; 17.6.2; 17.6.1w; 17.6.1a; 17.6.1x; 17.6.3; 17.6.1y; 17.6.1z; 17.6.3a; 17.6.4; 17.6.1z1; 17.6.5; 17.6.5a; 17.7.1; 17.7.1a; 17.7.1b; 17.7.2; 17.10.1; 17.10.1a; 17.10.1b; 17.8.1; 17.8.1a; 17.9.1; 17.9.1w; 17.9.2; 17.9.1a; 17.9.1x; 17.9.1y; 17.9.3; 17.9.2a; 17.9.1x1; 17.9.3a; 17.9.1y1; 17.11.1; 17.11.1a; 17.11.99SW - Cisco IOS: affected 12.4(24)T; 12.4(24)T3; 12.4(22)T1; 12.4(24)T5; 12.4(24)T4; 12.4(22)T; 12.4(24)T8; 12.4(24)T2; 12.4(22)T5; 12.4(22)T4; 12.4(24)T1; 12.4(24)T7; 12.4(22)T3; 12.4(24)T6; 12.4(22)T2; 12.4(24)T4a; 12.4(24)T4b; 12.4(24)T3e; 12.4(24)T4c; 12.4(24)T4d; 12.4(24)T4e; 12.4(24)T3f; 12.4(24)T4f; 12.4(24)T4l; 12.4(24)MD1; 12.4(24)MD; 12.4(24)MD3; 12.4(24)MD2; 12.4(22)MD1; 12.4(22)MD2; 12.4(24)MD5; 12.4(22)MD; 12.4(24)MD4; 12.4(24)MD6; 12.4(24)MD7; 12.4(22)XR5; 12.4(22)XR4; 12.4(22)XR7; 12.4(22)XR2; 12.4(22)XR6; 12.4(22)XR10; 12.4(22)XR1; 12.4(22)XR9; 12.4(22)XR3; 12.4(22)XR8; 12.4(22)XR11; 12.4(22)XR12; 12.4(22)MDA3; 12.4(24)MDA5; 12.4(22)MDA5; 12.4(24)MDA3; 12.4(22)MDA4; 12.4(24)MDA4; 12.4(24)MDA1; 12.4(22)MDA; 12.4(22)MDA2; 12.4(22)MDA1; 12.4(24)MDA2; 12.4(22)MDA6; 12.4(24)MDA6; 12.4(24)MDA7; 12.4(24)MDA8; 12.4(24)MDA10; 12.4(24)MDA9; 12.4(24)MDA11; 12.4(24)MDA12; 12.4(24)MDA13; 12.4(24)YG3; 12.4(24)YG4; 12.4(24)YG1; 12.4(24)YG2; 12.4(24)YG; 15.0(1)M1; 15.0(1)M5; 15.0(1)M4; 15.0(1)M3; 15.0(1)M2; 15.0(1)M6; 15.0(1)M; 15.0(1)M7; 15.0(1)M10; 15.0(1)M9; 15.0(1)M8; 15.0(1)XA2; 15.0(1)XA4; 15.0(1)XA1; 15.0(1)XA3; 15.0(1)XA; 15.0(1)XA5; 15.1(2)T; 15.1(1)T4; 15.1(3)T2; 15.1(1)T1; 15.1(2)T0a; 15.1(3)T3; 15.1(1)T3; 15.1(2)T3; 15.1(2)T4; 15.1(1)T2; 15.1(3)T; 15.1(2)T2a; 15.1(3)T1; 15.1(1)T; 15.1(2)T2; 15.1(2)T1; 15.1(2)T5; 15.1(3)T4; 15.1(1)T5; 15.1(1)XB; 15.0(1)S2; 15.0(1)S1; 15.0(1)S; 15.0(1)S3a; 15.0(1)S4; 15.0(1)S5; 15.0(1)S4a; 15.0(1)S6; 15.2(1)S; 15.2(2)S; 15.2(1)S1; 15.2(4)S; 15.2(1)S2; 15.2(2)S1; 15.2(2)S2; 15.2(2)S0a; 15.2(2)S0c; 15.2(4)S1; 15.2(4)S4; 15.2(4)S6; 15.2(4)S2; 15.2(4)S5; 15.2(4)S3; 15.2(4)S3a; 15.2(4)S4a; 15.2(4)S7; 15.3(1)T A version outside these ranges is not a statement that it is unaffected. ## References - [other] https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-getvpn-rce-g8qR68sx - [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-20109 --- Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.