CVE-2020-12135 Information

Description

bson before 0.8 incorrectly uses int rather than size_t for many variables parameters and return values. In particular the bson_ensure_space() parameter bytesNeeded could have an integer overflow via properly constructed bson input.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Reference

https://bugs.launchpad.net/ubuntu/+source/whoopsie/+bug/1872560 https://github.com/10gen-archive/mongo-c-driver-legacy/commit/1a1f5e26a4309480d88598913f9eebf9e9cba8cadiff-f7d29a680148f52d6601f59ed787f577 https://launchpadlibrarian.net/474887364/bson-fix-overflow.patch https://usn.ubuntu.com/4450-1/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5