Use of a broken or risky cryptographic algorithm in hostapd (Alpine package)

1) Use of a broken or risky cryptographic algorithm

EUVDB-ID: #VU23960

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-9495

CWE-ID: CWE-327 - Use of a Broken or Risky Cryptographic Algorithm

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information on the target system.

The vulnerability exists due to the implementations of EAP-PWD are vulnerable to side-channel attacks as a result of cache access patterns. A remote attacker with ability to install and execute applications can crack weak passwords when memory access patterns are visible in a shared cache.

Mitigation

Install update from vendor's website.

Vulnerable software versions

hostapd (Alpine package): 1.1-r0 - 2.7-r3

External links

http://git.alpinelinux.org/aports/commit/?id=b7d037c2a9b8f72b1230453919246b1637028ada
http://git.alpinelinux.org/aports/commit/?id=4d3ebcee7e5f68b1e6f145336363ec5a52d6ca17
http://git.alpinelinux.org/aports/commit/?id=a39d043ea01e0fb7b6bde640d1d2e3fb90685a1e

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.