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CVE-2017-3807

A vulnerability in Common Internet Filesystem (CIFS) code in the Clientless SSL VPN functionality of Cisco ASA Software, Major Releases 9.0-9.6, could allow an authenticated, remote attacker to cause a heap overflow. The vulnerability is due to insufficient validation of user supplied input. An attacker could exploit this vulnerability by sending a crafted URL to the affected system. An exploit…

Severity
High 8.8
Published
9 Feb 2017
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
15% in the next 30 daysHigher than 96% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
Memory buffer errors (CWE-119)
Attack
Over the network · Needs a user account · No user action needed
Attacker can
Read data · Change data · Take it down
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Sources
NVD

Description

A vulnerability in Common Internet Filesystem (CIFS) code in the Clientless SSL VPN functionality of Cisco ASA Software, Major Releases 9.0-9.6, could allow an authenticated, remote attacker to cause a heap overflow. The vulnerability is due to insufficient validation of user supplied input. An attacker could exploit this vulnerability by sending a crafted URL to the affected system. An exploit could allow the remote attacker to cause a reload of the affected system or potentially execute code. Note: Only traffic directed to the affected system can be used to exploit this vulnerability. This vulnerability affects systems configured in routed firewall mode only and in single or multiple context mode. This vulnerability can be triggered by IPv4 or IPv6 traffic. A valid TCP connection is needed to perform the attack. The attacker needs to have valid credentials to log in to the Clientless SSL VPN portal.

From NVD. Shortened; the full text is there.

Affected software

SoftwareAffected versions
Cisco ASA and Firepower Threat DefenseServers and applications · cpe:o:cisco:adaptive_security_appliance_software
  • Version 9.6.2.7
  • Version 9.6.2.3
  • Version 9.6.2.2
  • Version 9.6.2.1
All 324 release lines
  • Version 7.0.1
  • Version 7.0.1.4
  • Version 7.0.2
  • Version 7.0.3
  • Version 7.0.4
  • Version 7.0.4.2
  • Version 7.0.5
  • Version 7.0.5.12
  • Version 7.0.6
  • Version 7.0.6.4
  • Version 7.0.6.8
  • Version 7.0.6.18
  • Version 7.0.6.22
  • Version 7.0.6.26
  • Version 7.0.6.29
  • Version 7.0.6.32
  • Version 7.0.7
  • Version 7.0.7.1
  • Version 7.0.7.4
  • Version 7.0.7.9
  • Version 7.0.7.12
  • Version 7.0.8
  • Version 7.0.8.2
  • Version 7.0.8.8
  • Version 7.0.8.12
  • Version 7.0.8.13
  • Version 7.1.2
  • Version 7.1.2.16
  • Version 7.1.2.20
  • Version 7.1.2.24
  • Version 7.1.2.28
  • Version 7.1.2.38
  • Version 7.1.2.42
  • Version 7.1.2.46
  • Version 7.1.2.49
  • Version 7.1.2.53
  • Version 7.1.2.61
  • Version 7.1.2.64
  • Version 7.1.2.72
  • Version 7.1.2.81
  • Version 7.2.1
  • Version 7.2.1.9
  • Version 7.2.1.13
  • Version 7.2.1.19
  • Version 7.2.1.24
  • Version 7.2.2
  • Version 7.2.2.6
  • Version 7.2.2.10
  • Version 7.2.2.14
  • Version 7.2.2.18
  • Version 7.2.2.19
  • Version 7.2.2.22
  • Version 7.2.2.34
  • Version 7.2.3
  • Version 7.2.3.1
  • Version 7.2.3.12
  • Version 7.2.3.16
  • Version 7.2.4
  • Version 7.2.4.6
  • Version 7.2.4.9
  • Version 7.2.4.18
  • Version 7.2.4.25
  • Version 7.2.4.27
  • Version 7.2.4.30
  • Version 7.2.4.33
  • Version 7.2.5
  • Version 7.2.5.2
  • Version 7.2.5.4
  • Version 7.2.5.7
  • Version 7.2.5.8
  • Version 7.2.5.10
  • Version 7.2.5.12
  • Version 7.2.5.16
  • Version 8.0.1.2
  • Version 8.0.2
  • Version 8.0.2.11
  • Version 8.0.2.15
  • Version 8.0.3
  • Version 8.0.3.6
  • Version 8.0.3.12
  • Version 8.0.3.19
  • Version 8.0.4
  • Version 8.0.4.3
  • Version 8.0.4.9
  • Version 8.0.4.16
  • Version 8.0.4.23
  • Version 8.0.4.25
  • Version 8.0.4.28
  • Version 8.0.4.31
  • Version 8.0.4.32
  • Version 8.0.4.33
  • Version 8.0.5
  • Version 8.0.5.20
  • Version 8.0.5.23
  • Version 8.0.5.25
  • Version 8.0.5.27
  • Version 8.0.5.28
  • Version 8.0.5.31
  • Version 8.1.0.104
  • Version 8.1.1
  • Version 8.1.1.6
  • Version 8.1.2
  • Version 8.1.2.13
  • Version 8.1.2.15
  • Version 8.1.2.16
  • Version 8.1.2.19
  • Version 8.1.2.23
  • Version 8.1.2.24
  • Version 8.1.2.49
  • Version 8.1.2.50
  • Version 8.1.2.55
  • Version 8.1.2.56
  • Version 8.2.0.45
  • Version 8.2.1
  • Version 8.2.1.11
  • Version 8.2.2
  • Version 8.2.2.9
  • Version 8.2.2.10
  • Version 8.2.2.12
  • Version 8.2.2.16
  • Version 8.2.2.17
  • Version 8.2.3
  • Version 8.2.4
  • Version 8.2.4.1
  • Version 8.2.4.4
  • Version 8.2.5
  • Version 8.2.5.13
  • Version 8.2.5.22
  • Version 8.2.5.26
  • Version 8.2.5.33
  • Version 8.2.5.40
  • Version 8.2.5.41
  • Version 8.2.5.46
  • Version 8.2.5.48
  • Version 8.2.5.50
  • Version 8.2.5.52
  • Version 8.2.5.55
  • Version 8.2.5.57
  • Version 8.2.5.59
  • Version 8.3.1
  • Version 8.3.1.1
  • Version 8.3.1.4
  • Version 8.3.1.6
  • Version 8.3.2
  • Version 8.3.2.4
  • Version 8.3.2.13
  • Version 8.3.2.23
  • Version 8.3.2.25
  • Version 8.3.2.31
  • Version 8.3.2.33
  • Version 8.3.2.34
  • Version 8.3.2.37
  • Version 8.3.2.39
  • Version 8.3.2.40
  • Version 8.3.2.41
  • Version 8.3.2.44
  • Version 8.4.0
  • Version 8.4.1
  • Version 8.4.1.3
  • Version 8.4.1.11
  • Version 8.4.2
  • Version 8.4.2.1
  • Version 8.4.2.8
  • Version 8.4.3
  • Version 8.4.3.8
  • Version 8.4.3.9
  • Version 8.4.4
  • Version 8.4.4.1
  • Version 8.4.4.3
  • Version 8.4.4.5
  • Version 8.4.4.9
  • Version 8.4.5
  • Version 8.4.5.6
  • Version 8.4.6
  • Version 8.4.7
  • Version 8.4.7.3
  • Version 8.4.7.15
  • Version 8.4.7.22
  • Version 8.4.7.23
  • Version 8.4.7.26
  • Version 8.4.7.28
  • Version 8.4.7.29
  • Version 8.5.1
  • Version 8.5.1.1
  • Version 8.5.1.6
  • Version 8.5.1.7
  • Version 8.5.1.14
  • Version 8.5.1.17
  • Version 8.5.1.18
  • Version 8.5.1.19
  • Version 8.5.1.21
  • Version 8.5.1.24
  • Version 8.6.1
  • Version 8.6.1.1
  • Version 8.6.1.2
  • Version 8.6.1.5
  • Version 8.6.1.10
  • Version 8.6.1.12
  • Version 8.6.1.13
  • Version 8.6.1.14
  • Version 8.6.1.17
  • Version 8.7.1
  • Version 8.7.1.1
  • Version 8.7.1.3
  • Version 8.7.1.4
  • Version 8.7.1.7
  • Version 8.7.1.8
  • Version 8.7.1.11
  • Version 8.7.1.13
  • Version 8.7.1.16
  • Version 8.7.1.17
  • Version 9.0.1
  • Version 9.0.2
  • Version 9.0.2.10
  • Version 9.0.3
  • Version 9.0.3.6
  • Version 9.0.3.8
  • Version 9.0.4
  • Version 9.0.4.1
  • Version 9.0.4.5
  • Version 9.0.4.7
  • Version 9.0.4.17
  • Version 9.0.4.20
  • Version 9.0.4.24
  • Version 9.0.4.26
  • Version 9.0.4.29
  • Version 9.0.4.33
  • Version 9.0.4.35
  • Version 9.0.4.37
  • Version 9.0.4.40
  • Version 9.0.4.42
  • Version 9.1(7)4
  • Version 9.1(7)6
  • Version 9.1(7)7
  • Version 9.1(7)9
  • Version 9.1(7)11
  • Version 9.1(7)12
  • Version 9.1.1
  • Version 9.1.1.4
  • Version 9.1.2
  • Version 9.1.2.8
  • Version 9.1.3
  • Version 9.1.3.2
  • Version 9.1.4
  • Version 9.1.4.5
  • Version 9.1.5
  • Version 9.1.5.10
  • Version 9.1.5.12
  • Version 9.1.5.15
  • Version 9.1.5.21
  • Version 9.1.6
  • Version 9.1.6.1
  • Version 9.1.6.4
  • Version 9.1.6.6
  • Version 9.1.6.8
  • Version 9.1.6.10
  • Version 9.2(0.0)
  • Version 9.2(0.104)
  • Version 9.2(3.1)
  • Version 9.2.1
  • Version 9.2.2
  • Version 9.2.2.4
  • Version 9.2.2.7
  • Version 9.2.2.8
  • Version 9.2.3
  • Version 9.2.3.3
  • Version 9.2.3.4
  • Version 9.2.4
  • Version 9.2.4.2
  • Version 9.2.4.4
  • Version 9.2.4.8
  • Version 9.2.4.10
  • Version 9.2.4.13
  • Version 9.2.4.14
  • Version 9.2.4.16
  • Version 9.2.4.17
  • Version 9.2.4.18
  • Version 9.2.4.19
  • Version 9.3(1.50)
  • Version 9.3(1.105)
  • Version 9.3(2.100)
  • Version 9.3(2.243)
  • Version 9.3.1
  • Version 9.3.1.1
  • Version 9.3.2
  • Version 9.3.2.2
  • Version 9.3.3
  • Version 9.3.3.1
  • Version 9.3.3.2
  • Version 9.3.3.5
  • Version 9.3.3.6
  • Version 9.3.3.9
  • Version 9.3.3.10
  • Version 9.3.3.11
  • Version 9.3.5
  • Version 9.4.0.115
  • Version 9.4.1
  • Version 9.4.1.1
  • Version 9.4.1.2
  • Version 9.4.1.3
  • Version 9.4.1.5
  • Version 9.4.2
  • Version 9.4.2.3
  • Version 9.4.3
  • Version 9.4.3.3
  • Version 9.4.3.4
  • Version 9.5.1
  • Version 9.5.2
  • Version 9.5.2.6
  • Version 9.5.2.10
  • Version 9.5.2.14
  • Version 9.5.3
  • Version 9.5.3.1
  • Version 9.5.3.2
  • Version 9.5.3.3
  • Version 9.5.3.6
  • Version 9.5.3.7
  • Version 9.6.1.5
  • Version 9.6.1.10
  • Version 9.6.2
  • Version 9.6.2.1
  • Version 9.6.2.2
  • Version 9.6.2.3
  • Version 9.6.2.7

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2017-3807
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2017-3807