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Vulnerability · NVD

CVE-2022-42919

CVE-2022-42919, rated high by the vendor: 3 tracked apps concerned, all fixed or indeterminable on their current version.

Severity (CVSS)
7.8

Base CVSS ; severity is a vendor rating (different scale)

Exploitation
0.8 %

EPSS, predicted over 30 days

Tracked apps
3
Still exposed
0
Vendor bulletin scale : NVD CVSS pending

Python 3.9.x before 3.9.16 and 3.10.x before 3.10.9 on Linux allows local privilege escalation in a non-default configuration. The Python multiprocessing library, when used with the forkserver start method on Linux, allows pickles to be deserialized from any user in the same machine local network namespace, which in many system configurations means any user on the same machine. Pickles can execute arbitrary code. Thus, this allows for local user privilege escalation to the user that any forkserver process is running as. Setting multiprocessing.util.abstract_sockets_supported to False is a workaround. The forkserver start method for multiprocessing is not the default start method. This issue is Linux specific because only Linux supports abstract namespace sockets. CPython before 3.9 does not make use of Linux abstract namespace sockets by default. Support for users manually specifying an abstract namespace socket was added as a bugfix in 3.7.8 and 3.8.3, but users would need to make specific uncommon API calls in order to do that in CPython before 3.9.

Attack vector : Local No user interaction
Show raw CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS 0.76% above median percentile 54.8%

Tracked apps referencing this CVE

For each app: the affected range, the fixing version, and where the tracked app stands today.

  • Python 3.12 Windows winget:Python.Python.3.12
    Affected ≥3.7.3 ≤3.7.15 Fixed in > 3.7.15 Latest tracked 3.12.10 patched
  • Python 3.13 Windows winget:Python.Python.3.13
    Affected ≥3.7.3 ≤3.7.15 Fixed in > 3.7.15 Latest tracked 3.13.15 patched
  • Python 3.14 Windows winget:Python.Python.3.14
    Affected ≥3.7.3 ≤3.7.15 Fixed in > 3.7.15 Latest tracked 3.14.7 patched
Vulnerable CPE configurations (4)
Vendor Product Versions
python python
All platforms (wildcard)
 ≥3.7.3 ≤3.7.15
python python
All platforms (wildcard)
 ≥3.8.3 ≤3.8.15
python python
All platforms (wildcard)
 ≥3.9.0 <3.9.16
python python
All platforms (wildcard)
 ≥3.10.0 <3.10.9
View on NVD ↗

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