CVE-2012-0955
software-properties was vulnerable to a person-in-the-middle attack due to incorrect TLS certificate validation in softwareproperties/ppa.py. software-properties didn't check TLS certificates under python2 and only checked certificates under python3 if…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.61%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
software-properties was vulnerable to a person-in-the-middle attack due to incorrect TLS certificate validation in softwareproperties/ppa.py. software-properties didn't check TLS certificates under python2 and only checked certificates under python3 if a valid certificate bundle was provided. Fixed in software-properties version 0.92.
- CVSS 3.1
- 7.4 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 0.61% probability · 48th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-295
- Affected
- canonical/software-properties
- Source
- security@ubuntu.com
References
- https://code.launchpad.net/~cyphermox/software-properties/lp1036839/+merge/119753Patch, Vendor Advisory
- https://launchpad.net/bugs/1036839Exploit, Vendor Advisory
- https://code.launchpad.net/~cyphermox/software-properties/lp1036839/+merge/119753Patch, Vendor Advisory
- https://launchpad.net/bugs/1036839Exploit, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.