Mozilla Firefox/Firefox ESR/Thunderbird NSS information exposure

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Mozilla Firefox, Firefox ESR and Thunderbird. It has been classified as problematic. Affected by this issue is some unknown functionality of the component NSS. Performing a manipulation results in information exposure. This vulnerability is known as CVE-2020-12399. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Mozilla Firefox, Firefox ESR and Thunderbird (Web Browser) (unknown version). It has been classified as problematic. This affects an unknown code block of the component NSS. The manipulation with an unknown input leads to a information exposure vulnerability. CWE is classifying the issue as CWE-203. The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not. This is going to have an impact on confidentiality. The summary by CVE is:

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.

The weakness was published 07/09/2020 as Bug 1631576 as not defined bug report (Bugzilla). The advisory is shared at bugzilla.mozilla.org. This vulnerability is uniquely identified as CVE-2020-12399 since 04/28/2020. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

Upgrading eliminates this vulnerability.

Similar entries are available at VDB-157789 and VDB-157788. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.0

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Information exposure
CWE: CWE-203 / CWE-200 / CWE-284
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/28/2020 🔍
07/09/2020 +72 days 🔍
07/10/2020 +1 days 🔍
07/10/2020 +0 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: Bug 1631576
Status: Not defined

CVE: CVE-2020-12399 (🔍)
GCVE (CVE): GCVE-0-2020-12399
GCVE (VulDB): GCVE-100-157785
See also: 🔍

Entryinfo

Created: 07/10/2020 08:12
Updated: 07/10/2020 08:17
Changes: 07/10/2020 08:12 (41), 07/10/2020 08:17 (18)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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