Cryptographic issues in curl (Alpine package)

1) Cryptographic issues

EUVDB-ID: #VU32263

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-5419

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

curl and libcurl before 7.50.1 do not prevent TLS session resumption when the client certificate has changed, which allows remote attackers to bypass intended restrictions by resuming a session.

Mitigation

Install update from vendor's website.

Vulnerable software versions

curl (Alpine package): 7.49.1-r0 - 7.50.0-r0

External links

http://git.alpinelinux.org/aports/commit/?id=e57c1f8b95e9a6aecc75e9eaae6c7bf9e259adb6
http://git.alpinelinux.org/aports/commit/?id=7079fe21530ae1c8147925d8b591131b786ab2e9
http://git.alpinelinux.org/aports/commit/?id=619d9f8608068fab555a9a54e6154eb798eb5c2c
http://git.alpinelinux.org/aports/commit/?id=39696e7a1a7079578ea07cb9514fd0c50105340e
http://git.alpinelinux.org/aports/commit/?id=0b5317d5717ad95fbe3c5737438b3f62f5457f61
http://git.alpinelinux.org/aports/commit/?id=773b3cce8cf0ef9f65aa00ac6985aaba3f582b2c
http://git.alpinelinux.org/aports/commit/?id=e2a41181980948dc15f6b20a9b6980444f9f73df
http://git.alpinelinux.org/aports/commit/?id=4bdd777b8634c3c2ef8d4bb6254f22cea78b46d6

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.