Medium severity · published Mar 26, 2020
CVE-2019-15796
Python-apt doesn't check if hashes are signed in `Version.fetch_binary()` and `Version.fetch_source()` of apt/package.py or in `_fetch_archives()` of apt/cache.py in version…
4.7
CVSS
0.5%
EPSS
No
On KEV
Description
Python-apt doesn't check if hashes are signed in `Version.fetch_binary()` and `Version.fetch_source()` of apt/package.py or in `_fetch_archives()` of apt/cache.py in version 1.9.3ubuntu2 and earlier. This allows downloads from unsigned repositories which shouldn't be allowed and has been fixed in verisions 1.9.5, 1.9.0ubuntu1.2, 1.6.5ubuntu0.1, 1.1.0~beta1ubuntu0.16.04.7, 0.9.3.5ubuntu3+esm2, and 0.8.3ubuntu7.5.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PY
Python-apt · Ubuntu
0.8.0; 0.8.1; 0.8.3; 0.8.3; 0.8.3; 0.8.3; +34 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-15796
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-15796
Patch
https://usn.ubuntu.com/4247-1/
Patch
https://usn.ubuntu.com/4247-3/
More from Python-apt
4.7
CVE-2019-15795
python-apt only checks the MD5 sums of downloaded files in `Version.fetch_binary()` and `Version.fetch_source()` of apt/package.py in version 1.9.0ubuntu1 and earlier