Improper String Copy Handling in DCMTK Affects Database Queries
CVE-2021-41689

7.5HIGH

Key Information:

Vendor

Offis

Status
Dcmtk
Vendor
CVE Published:
28 June 2022

What is CVE-2021-41689?

The DCMTK library, specifically its dcmqrdb program, fails to handle string copying properly up to version 3.6.6. When specific requests are sent, the program queries its database but may attempt to copy the result even in the absence of data, potentially leading to a head-based overflow. This vulnerability can be exploited by attackers to execute denial of service (DoS) attacks, impacting the availability and functionality of the affected service.

References

https://github.com/DCMTK/dcmtk
https://github.com/DCMTK/dcmtk/commit/5c14bf53fb42ceca12b...
https://lists.debian.org/debian-lts-announce/2024/06/msg0...
mailing-list

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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