Medium severity · published May 26, 2020
CVE-2020-3812
qmail-verify as used in netqmail 1.06 is prone to an information disclosure vulnerability
5.5
CVSS
0.4%
EPSS
No
On KEV
Description
qmail-verify as used in netqmail 1.06 is prone to an information disclosure vulnerability. A local attacker can test for the existence of files and directories anywhere in the filesystem because qmail-verify runs as root and tests for the existence of files in the attacker's home directory, without dropping its privileges first.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0; 9.0; 10.0 · source: NVD
NE
Netqmail · Netqmail
1.06 · source: NVD
UL
Ubuntu Linux · Canonical
20.04 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-3812
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-3812
Issue Tracking
https://bugs.debian.org/961060
Mailing List
https://lists.debian.org/debian-lts-announce/2020/06/msg00002.html
Third Party Advisory
https://usn.ubuntu.com/4556-1/
Third Party Advisory
https://www.debian.org/security/2020/dsa-4692
Exploit
https://www.openwall.com/lists/oss-security/2020/05/19/8
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