High severity · published Nov 27, 2020
CVE-2020-29367
blosc2.c in Blosc C-Blosc2 through 2.0.0.beta.5 has a heap-based buffer overflow when there is a lack of space to write compressed data
7.8
CVSS
1.2%
EPSS
No
On KEV
Description
blosc2.c in Blosc C-Blosc2 through 2.0.0.beta.5 has a heap-based buffer overflow when there is a lack of space to write compressed data.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 68% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CB
C-blosc2 · Blosc
2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; +3 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-29367
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-29367
Mailing List
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26442
Patch
https://github.com/Blosc/c-blosc2/commit/c4c6470e88210afc95262c8b9fcc27e30ca043ee
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