Memory leak in Cisco IOS XE

1) Memory leak

EUVDB-ID: #VU672

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 - Missing release of memory after effective lifetime

Exploit availability: No

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

CPE2.3

• cpe:2.3:o:cisco_systems: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.