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CVE-2022-40958

Date: December 21, 2022

By injecting a cookie with certain special characters, an attacker on a shared subdomain which is not a secure context could set and thus overwrite cookies from a secure context, leading to session fixation and other attacks. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.

Severity Score

Related Resources (9)

https://security-tracker.debian.org/tracker/CVE-2022-40958
https://www.mozilla.org/security/advisories/mfsa2022-42/
https://bugzilla.mozilla.org/show_bug.cgi?id=1779993
https://www.mozilla.org/security/advisories/mfsa2022-41/
https://www.mozilla.org/security/advisories/mfsa2022-40/
https://nvd.nist.gov/vuln/detail/CVE-2022-40958
https://people.canonical.com/~ubuntu-security/cve/CVE-2022-40958
https://access.redhat.com/security/cve/CVE-2022-40958
https://www.mend.io/vulnerability-database/CVE-2022-40958

Severity Score

Weakness Type (CWE)

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-74

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

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