Mozilla Firefox up to 95 Network Request use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$5k-$25k0.00

Summaryinfo

A vulnerability was found in Mozilla Firefox up to 95 and classified as problematic. This affects an unknown function of the component Network Request Handler. Such manipulation leads to use after free. This vulnerability is uniquely identified as CVE-2022-22740. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 95 (Web Browser) and classified as problematic. Affected by this issue is an unknown code of the component Network Request Handler. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is availability. CVE summarizes:

Certain network request objects were freed too early when releasing a network request handle. This could have lead to a use-after-free causing a potentially exploitable crash. This vulnerability affects Firefox ESR < 91.5, Firefox < 96, and Thunderbird < 91.5.

The weakness was disclosed 01/11/2022 by bo13oy as Bug 1742334 as confirmed advisory (Website). The advisory is available at bugzilla.mozilla.org. The advisory contains:

Certain network request objects were freed too early when releasing a network request handle. This could have lead to a use-after-free causing a potentially exploitable crash.
This vulnerability is handled as CVE-2022-22740. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 04/17/2025).

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

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
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: 🔍

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 🔍
04/17/2025 +931 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: Bug 1742334
Researcher: bo13oy
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2022-22740 (🔍)
GCVE (CVE): GCVE-0-2022-22740
GCVE (VulDB): GCVE-100-209822

Entryinfo

Created: 09/29/2022 15:21
Updated: 04/17/2025 04:53
Changes: 09/29/2022 15:21 (18), 09/29/2022 15:24 (28), 10/25/2022 14:55 (1), 04/17/2025 04:53 (27)
Complete: 🔍
Cache ID: 216::103

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