Missing CRL sanity check in openssl (Alpine package)



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2016-7052
CWE-ID CWE-476
Exploitation vector Network
Public exploit N/A
Vulnerable software
 openssl (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Missing CRL sanity check

EUVDB-ID: #VU660

Risk: Medium

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

CVE-ID: CVE-2016-7052

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to incorrect implementation of CRL sanity check in version 1.0.2i. Any attempt to use CRLs results in null pointe exception and crashes the process.

Mitigation

Install update from vendor's website.

Vulnerable software versions

openssl (Alpine package): 1.0.2i-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=4376edf0014e6a665cd31b505e9743b39ee757f7
https://git.alpinelinux.org/aports/commit/?id=5cbc7dc8d322823675050b8893daf42036a3c714
https://git.alpinelinux.org/aports/commit/?id=3b1b395e37598b48dcec00a19a03f122646f1755
https://git.alpinelinux.org/aports/commit/?id=5d5a83f5d395472559136570740c0e2163652526


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.



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