PT-2015-7168 · Cisco · Cisco Anyconnect Secure Mobility Client

Yorick Koster · Published 2015-09-25 · Updated 2016-12-12 · CVE-2015-6305

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Cisco AnyConnect Secure Mobility Client versions 2.0 through 4.1

Description The issue is related to an untrusted search path vulnerability in the CMainThread::launchDownloader function in vpndownloader.exe. This allows local users to gain privileges via a Trojan horse DLL in the current working directory. For example, a Trojan horse dbghelp.dll can be used to exploit this issue.

Recommendations For Cisco AnyConnect Secure Mobility Client versions 2.0 through 4.1, consider restricting access to the vpndownloader.exe until a patch is available. As a temporary workaround, avoid using the CMainThread::launchDownloader function to minimize the risk of exploitation.

Exploit

Fix

Untrusted Search Path

Weakness Enumeration

CWE-426

Related Identifiers

CVE-2015-6305

Affected Products

Cisco Anyconnect Secure Mobility Client

References · 7

• 🔥 https://exploit-db.com/exploits/38289 · Exploit
• 🔥 https://code.google.com/p/google-security-research/issues/detail?id=460 · Exploit
• http://tools.cisco.com/security/center/viewAlert.x?alertId=41136 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2015-6305 · Security Note
• http://seclists.org/fulldisclosure/2015/Sep/80 · Note
• http://packetstormsecurity.com/files/133876/Cisco-AnyConnect-Secure-Mobility-Client-3.1.08009-Privilege-Elevation.html · Note
• http://securitytracker.com/id/1033643 · Note