A vulnerability in the shared library loading mechanism of Cisco AnyConnect Secure Mobility Client for Linux and Mac OS could allow an authenticated, local attacker to perform a shared library hijacking attack on an affected device if the VPN Posture (HostScan) Module is installed on the AnyConnect client. This vulnerability is due to a race condition in the signature verification process for shared library files that are loaded on an affected device. An attacker could exploit this vulnerability by sending a series of crafted interprocess communication (IPC) messages to the AnyConnect process. A successful exploit could allow the attacker to execute arbitrary code on the affected device with root privileges. To exploit this vulnerability, the attacker must have a valid account on the system.
References
| Link | Resource |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-lib-hija-cAFB7x4q | Vendor Advisory |
Configurations
Configuration 1 (hide)
| AND |
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History
14 Oct 2021, 18:47
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : 6.9
v3 : 7.0 |
| References | (CISCO) https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-lib-hija-cAFB7x4q - Vendor Advisory | |
| CPE | cpe:2.3:a:cisco:anyconnect_secure_mobility_client:*:*:*:*:*:*:*:* cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* |
|
| CWE | CWE-367 |
06 Oct 2021, 20:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2021-10-06 20:15
Updated : 2023-12-10 14:09
NVD link : CVE-2021-34788
Mitre link : CVE-2021-34788
CVE.ORG link : CVE-2021-34788
JSON object : View
Products Affected
apple
- macos
linux
- linux_kernel
cisco
- anyconnect_secure_mobility_client
CWE
CWE-367
Time-of-check Time-of-use (TOCTOU) Race Condition