Mozilla Firefox up to 95 pkcs7 denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.1$0-$5k0.00

A vulnerability was found in Mozilla Firefox up to 95 (Web Browser). It has been classified as problematic. Affected is an unknown function of the component pkcs7 Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.

The weakness was disclosed 01/11/2022 by Tavis Ormandy as Bug 1735028 as confirmed advisory (Website). The advisory is shared for download at bugzilla.mozilla.org. The advisory contains:

After accepting an untrusted certificate, handling an empty pkcs7 sequence as part of the certificate data could have lead to a crash. This crash is believed to be unexploitable.
This vulnerability is traded as CVE-2022-22747. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/29/2022). The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 96 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

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: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Firefox 96

Timelineinfo

01/07/2022 🔍
01/11/2022 +4 days 🔍
01/11/2022 +0 days 🔍
09/29/2022 +261 days 🔍
10/25/2022 +26 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: Bug 1735028
Researcher: Tavis Ormandy
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2022-22747 (🔍)

Entryinfo

Created: 09/29/2022 15:27
Updated: 10/25/2022 15:46
Changes: 09/29/2022 15:27 (17), 09/29/2022 15:30 (29), 10/25/2022 15:46 (1)
Complete: 🔍

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