Ubuntu update for OpenSSL

Published: 2015-05-05

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2010-5298 CVE-2014-0198
CWE-ID	CWE-362 CWE-476
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Ubuntu Operating systems & Components / Operating system
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Race condition

EUVDB-ID: #VU11535

Risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2010-5298

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack or modify encrypted connection.

The vulnerability exists due to a race condition in the ssl3_read_bytes() function in OpenSSL. A remote attacker can inject data across sessions or cause a denial of service

Successful exploitation of the vulnerability requires that SSL_MODE_RELEASE_BUFFERS is enabled.

Mitigation

Update the affected packages

Ubuntu 14.04 LTS:

libssl1.0.0 1.0.1f-1ubuntu2.1

Ubuntu 13.10:

libssl1.0.0 1.0.1e-3ubuntu1.3

Ubuntu 12.10:

libssl1.0.0 1.0.1c-3ubuntu2.8

Ubuntu 12.04 LTS:

libssl1.0.0 1.0.1-4ubuntu5.13

Vulnerable software versions

Ubuntu: 12.04 - 14.04

CPE2.3

External links

https://www.ubuntu.com/usn/usn-2192-1/

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.

2) NULL pointer dereference

EUVDB-ID: #VU11534