#VU672 Memory leak in Cisco IOS XE - CVE-2016-6385

Vulnerability identifier: #VU672

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2016-6385

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco IOS XE
Operating systems & Components / Operating system

Vendor: Cisco Systems, Inc

Description
The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.

The weakness exists in Smart Install packets processing due to incorrect handling of image list parameters. A remote attacker can send specially crafted data, trigger memory leak and cause the service to crash.

Mitigation
Update to versions 15.2(6.3.0i)E, 15.2(5b)E, 15.2(5a)E, 15.2(5.1.79i)E, 15.2(5)E, 15.2(4m)E2, 15.2(4.7.2)EC, 15.2(4.7.1)EC, 15.2(4.4.3)EA4, 15.2(4.3.90)EC, 15.2(4.1.27)EB, 15.2(4.0r)EB, 15.2(4)EA6, 15.2(4)EA5, 15.2(4)EA4, 15.2(4)E3, 15.2(4)E2, 15.2(3m)E8, 15.2(3m)E7, 15.2(3)E4, 15.2(2)EB2, 15.2(2)E5a, 15.2(2)E5, 15.1(2)SG8, 15.0(2)SG11, 15.0(2)SE10, 15.0(2)EX11, 12.2(60)EZ9, 12.2(55)SE11, 3.9(0)E or 3.7(4)E.

Vulnerable software versions

Cisco IOS XE: 15.2.1.1

---

External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160928-smi

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.