Home/CVE/The helper application in Cisco AnyConnect Secure Mobility Client (formerly AnyConnect VPN Client) before 2.5.3041, and
CVE

CVE-2011-2040

The helper application in Cisco AnyConnect Secure Mobility Client (formerly AnyConnect VPN Client) before 2.5.3041, and

The helper application in Cisco AnyConnect Secure Mobility Client (formerly AnyConnect VPN Client) before 2.5.3041, and 3.0.x before 3.0.629, on Linux and Mac OS X downloads a client executable file (vpndownloader.exe) without verifying its authenticity, which allows remote attackers to execute arbitrary code via the url property to a Java applet, aka Bug ID CSCsy05934.

HIGH · CVSS 9.3 EPSS 0.02091
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

2
cisco anyconnect secure mobility client<= 2.5.2019
cisco anyconnect secure mobility clientall versions
◈

Detection Rules (IDS/IPS)

1
et-openET ACTIVEX Cisco AnyConnect VPN Secure Mobility Client Cisco.AnyConnect.VPNWeb.1 Arbitrary Program Execution Attemptattempted-user
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.
▣

Scoring & Timeline

9.3
HIGH · CVSS v2 (legacy) · psirt@cisco.com
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:M/Au:N/C:C/I:C/A:C
Published to NVD02 Jun 2011 · 07:55 PM
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=910
http://www.cisco.com/en/US/products/products_security_advisory09186a0080b80123.shtmlVendor Advisory
http://www.kb.cert.org/vuls/id/490097US Government Resource
http://www.securitytracker.com/id?1025591
https://exchange.xforce.ibmcloud.com/vulnerabilities/67739
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