Man-in-the-middle attack in nss (Alpine package)



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-12384
CWE-ID CWE-300
Exploitation vector Network
Public exploit N/A
Vulnerable software
 nss (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Man-in-the-middle attack

EUVDB-ID: #VU15735

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-12384

CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')

Exploit availability: No

Description

The vulnerability allows a remote attacker to conduct man-in-the-middle attack on the target system.

The weakness exists due to ServerHello.random is all zero when handling a v2-compatible ClientHello. A remote attacker can use man-in-the-middle techniques to conduct passive replay attack and obtain potentially sensitive information.

Mitigation

Install update from vendor's website.

Vulnerable software versions

nss (Alpine package): 3.36.1-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=1cf2a95d5e12256524f77e43497146c98ea1cec2
https://git.alpinelinux.org/aports/commit/?id=10d9b859f21c3a2b7db4ec0d764cba419f4dfc4b
https://git.alpinelinux.org/aports/commit/?id=447318e4bff01df5d8424ebddea8345bd4a29501
https://git.alpinelinux.org/aports/commit/?id=d72dda5f6aca3e285cc381ec3b01d1925d92f976


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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