Unauthenticated code execution via soap_decode buffer overflow
Published Mar 25, 2021 · Updated Aug 3, 2024
Buffer overflow in the WS-Addressing plugin in Genivia gSOAP 2.8.109 and 2.8.110 allows remote attackers to execute code via SOAP. The soap_decode function checks unsigned size_t values for negativity, allowing a length calculation to wrap and subsequent URI credential decoding to overrun its buffer. Unauthenticated HTTP access to a service built with the affected plugin is sufficient, and successful exploitation runs code in the service context.
Summary
What happened
Buffer overflow in the WS-Addressing plugin in Genivia gSOAP 2.8.109 and 2.8.110 allows remote attackers to execute code via SOAP. The soap_decode function checks unsigned size_t values for negativity, allowing a length calculation to wrap and subsequent URI credential decoding to overrun its buffer. Unauthenticated HTTP access to a service built with the affected plugin is sufficient, and successful exploitation runs code in the service context.
The record
- CVE
- CVE-2021-21783
- Published
- Mar 25, 2021
- Updated
- Aug 3, 2024
- Vendor
- Genivia
- Product
- gSOAP
- Classifications
- CWE-190, CWE-680, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 25, 2021CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=Genivia gSOAP 2.8.109, Genivia gSOAP 2.8.110
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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