Medium severity · published Mar 25, 2020
CVE-2019-20633
GNU patch through 2.7.6 contains a free(p_line[p_end]) Double Free vulnerability in the function another_hunk in pch.c that can cause a denial of service via a crafted patch file
5.5
CVSS
1%
EPSS
No
On KEV
Description
GNU patch through 2.7.6 contains a free(p_line[p_end]) Double Free vulnerability in the function another_hunk in pch.c that can cause a denial of service via a crafted patch file. NOTE: this issue exists because of an incomplete fix for CVE-2018-6952.
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)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PA
Patch · Gnu
through 2.7.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-20633
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-20633
Exploit
https://savannah.gnu.org/bugs/index.php?56683
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7.5
CVE-2018-6952
A double free exists in the another_hunk function in pch.c in GNU patch through 2.7.6