Ubuntu update for Libgcrypt



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-7526
CWE-ID CWE-310
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Side-channel attack

EUVDB-ID: #VU7276

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-7526

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists in libgcrypt's RSA-1024 implementation using left-to-right method for computing the sliding-window expansion. A remote attacker can perform side-channel attack and gain access to potentially sensitive information. 

Mitigation

Update the affected packages.

Ubuntu 12.04 LTS:
libgcrypt11 1.5.0-3ubuntu0.7

Vulnerable software versions

Ubuntu: 12.04

CPE2.3 External links

https://www.ubuntu.com/usn/usn-3347-2/


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.



###SIDEBAR###