openEuler 20.03 LTS update for nss



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2020-12403
CVE-2020-25648
CWE-ID CWE-125
CWE-770
Exploitation vector Network
Public exploit N/A
Vulnerable software
 openEuler
Operating systems & Components / Operating system

nss-debuginfo
Operating systems & Components / Operating system package or component

nss-softokn
Operating systems & Components / Operating system package or component

nss-devel
Operating systems & Components / Operating system package or component

nss-softokn-devel
Operating systems & Components / Operating system package or component

nss-util-devel
Operating systems & Components / Operating system package or component

nss-debugsource
Operating systems & Components / Operating system package or component

nss-util
Operating systems & Components / Operating system package or component

nss-help
Operating systems & Components / Operating system package or component

nss
Operating systems & Components / Operating system package or component

Vendor openEuler

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Out-of-bounds read

EUVDB-ID: #VU45799

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-12403

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition when processing data encrypted with CHACHA20-POLY1305 ciphersuite. A remote attacker can trick the victim to connect to a malicious server and gain access to sensitive information.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS

nss-debuginfo: before 3.54.0-6

nss-softokn: before 3.54.0-6

nss-devel: before 3.54.0-6

nss-softokn-devel: before 3.54.0-6

nss-util-devel: before 3.54.0-6

nss-debugsource: before 3.54.0-6

nss-util: before 3.54.0-6

nss-help: before 3.54.0-6

nss: before 3.54.0-6

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1115


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.

2) 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

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS

nss-debuginfo: before 3.54.0-6

nss-softokn: before 3.54.0-6

nss-devel: before 3.54.0-6

nss-softokn-devel: before 3.54.0-6

nss-util-devel: before 3.54.0-6

nss-debugsource: before 3.54.0-6

nss-util: before 3.54.0-6

nss-help: before 3.54.0-6

nss: before 3.54.0-6

CPE2.3 External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1115


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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