Medium severity · published Apr 24, 2020
CVE-2020-12135
bson before 0.8 incorrectly uses int rather than size_t for many variables, parameters, and return values
5.5
CVSS
1.2%
EPSS
No
On KEV
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
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 67% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CD
C Driver · Mongodb
before 0.8 · source: NVD
WH
Whoopsie · Whoopsie Project
through 0.2.69 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-12135
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-12135
Exploit
https://bugs.launchpad.net/ubuntu/+source/whoopsie/+bug/1872560
Patch
https://github.com/10gen-archive/mongo-c-driver-legacy/commit/1a1f5e26a4309480d88598913f9eebf9e9cba8ca#diff-f7d29a680148f52d6601f59ed787f577
Patch
https://launchpadlibrarian.net/474887364/bson-fix-overflow.patch
usn.ubuntu.com
https://usn.ubuntu.com/4450-1/
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