Gentoo update for Mozilla Network Security Service (NSS)



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-25648
CWE-ID CWE-770
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Gentoo Linux
Operating systems & Components / Operating system

dev-libs/nss
Operating systems & Components / Operating system package or component

Vendor Gentoo

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Allocation of Resources Without Limits or Throttling

EUVDB-ID: #VU47910

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-25648

CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

A flaw was found in the way NSS handled CCS (ChangeCipherSpec) messages in TLS 1.3. This flaw allows a remote attacker to send multiple CCS messages, causing a denial of service for servers compiled with the NSS library. The highest threat from this vulnerability is to system availability. This flaw affects NSS versions before 3.58.

Mitigation

Update the affected packages.
dev-libs/nss to version: 3.58

Vulnerable software versions

Gentoo Linux: All versions

dev-libs/nss: All versions

CPE2.3 External links

https://security.gentoo.org/glsa/202012-21


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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