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CVE-2021-44847

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Date: December 12, 2021

A stack-based buffer overflow in handle_request function in DHT.c in toxcore 0.1.9 through 0.1.11 and 0.2.0 through 0.2.12 (caused by an improper length calculation during the handling of received network packets) allows remote attackers to crash the process or potentially execute arbitrary code via a network packet.

Language: C

Severity Score

Related Resources (7)

https://security-tracker.debian.org/tracker/CVE-2021-44847
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S7EBS3NIRYJ7V3PTNINP3PJSVUHGZTGA/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZLTKINSPO5T65LB3ZASDPCREKUE22RYE/
https://github.com/TokTok/c-toxcore/pull/1718
https://nvd.nist.gov/vuln/detail/CVE-2021-44847
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-44847
https://www.mend.io/vulnerability-database/CVE-2021-44847

Severity Score

Weakness Type (CWE)

Incorrect Calculation

CWE-682

Out-of-bounds Write

CWE-787

Top Fix

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CVSS v3.1

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

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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