Advisoriesby IbisMongoDBGHSA-fqmh-x7gg-pfgw
Heap overflow via truncated base64 encoding of binary fields in length-limited JSON output
Fix: upgrade to 1.30.9 or later (2 fixed versions below)
Impact
A memory-handling error in the BSON-to-JSON conversion helpers of the MongoDB C Driver can write a small number of bytes past the end of a heap buffer when a binary field is encoded and the output is cut short at a caller-configured length limit. A party who supplies the document content, with no privileges on the application that links the driver, may cause a small amount of data outside the intended buffer to be altered.
Patches
Fixed in 1.30.9 and 2.5.2
Workarounds
Disable logging or logging truncation.
References
https://jira.mongodb.org/browse/CDRIVER-6410
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| MongoDB C Driver Product | >= 1.30.0, < 1.30.9 | 1.30.9 |
| >= 2.0.0, < 2.5.2 | 2.5.2 |
Details and references
- CVSS 4.0
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
- Severity from
- GitHub (reviewed advisory)