Use-after-free in Openswan

1) Use-after-free

EUVDB-ID: #VU44513

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2011-4073

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing vectors related to the (1) quick_outI1_continue and (2) quick_outI1 functions. A remote authenticated users can cause a denial of service (pluto IKE daemon crash).

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Openswan: 2.3.0 - 2.6.36

CPE2.3

• cpe:2.3:a:openswan_org:openswan:2.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:openswan_org:openswan:2.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:openswan_org:openswan:2.4.0:*:*:*:*:*:*:*

External links

https://secunia.com/advisories/46678
https://secunia.com/advisories/46681
https://secunia.com/advisories/47342
https://www.debian.org/security/2011/dsa-2374
https://www.openswan.org/download/CVE-2011-4073/CVE-2011-4073.txt
https://www.redhat.com/support/errata/RHSA-2011-1422.html
https://www.securityfocus.com/bid/50440
https://www.securitytracker.com/id?1026268

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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