Critical severity · published Dec 13, 2021
CVE-2021-44847
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…
9.8
CVSS
4.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.1% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
34; 35 · source: NVD
TO
Toxcore · Toktok
0.1.9 through 0.1.11; 0.2.0 through 0.2.12 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-44847
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-44847
Exploit
https://github.com/TokTok/c-toxcore/pull/1718
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S7EBS3NIRYJ7V3PTNINP3PJSVUHGZTGA/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLTKINSPO5T65LB3ZASDPCREKUE22RYE/
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