Information disclosure in hostapd (Alpine package)



Published: 2019-04-17
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-9494
CWE-ID CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
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hostapd (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) Information disclosure

EUVDB-ID: #VU23959

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-2019-9494

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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

The vulnerability exists due to the implementations of SAE are vulnerable to side channel attacks as a result of observable timing differences and cache access patterns. A remote attacker can gain leaked information from a side channel attack that can be used for full password recovery.

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.



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