Huawei EulerOS: Security Advisory for nss-softokn (EulerOS-SA-2020-2523)

Published: 2020-12-15 07:18:34
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:L/AC:H/Au:N/C:P/I:N/A:N

Summary:
The remote host is missing an update for the Huawei EulerOS 'nss-softokn' Linux Distribution Package(s) announced via the EulerOS-SA-2020-2523 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
NSS has shown timing differences when performing DSA signatures, which was exploitable and could eventually leak private keys. This vulnerability affects Thunderbird 68.9.0, Firefox 77, and Firefox ESR 68.9.(CVE-2020-12399) A flaw was found in the way CHACHA20-POLY1305 was implemented in NSS. When using multi-part Chacha20, it could cause out-of-bounds reads. This issue was fixed by explicitly disabling multi-part ChaCha20 (which was not functioning correctly) and strictly enforcing tag length. The highest threat from(CVE-2020-12403) When converting coordinates from projective to affine, the modular inversion was not performed in constant time, resulting in a possible timing-based side channel attack. This vulnerability affects Firefox 80 and Firefox for Android 80.(CVE-2020-12400)

Affected Versions:
'nss-softokn' Linux Distribution Package(s) on Huawei EulerOS V2.0SP8.

Recommendations:
Please install the updated Linux Distribution Package(s).

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2020-12399
https://nvd.nist.gov/vuln/detail/CVE-2020-12400
https://nvd.nist.gov/vuln/detail/CVE-2020-12403

References:


https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2020-2523

Severity
Low
CVSS Score
1.2
Published
2020-12-15
Modified
2020-12-15
Category
Huawei EulerOS Local Security Checks

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