It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the openjdk-17 package apport hooks, it could expose private data to other local users.
Published 2021-06-12 04:15:12
Updated 2021-06-16 13:08:58
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2021-32553

Probability of exploitation activity in the next 30 days: 0.04%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 8 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2021-32553

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
2.1
LOW AV:L/AC:L/Au:N/C:P/I:N/A:N
3.9
2.9
NIST
5.5
MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
1.8
3.6
NIST
7.3
HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L
2.0
4.7
Canonical Ltd.

CWE ids for CVE-2021-32553

  • The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
    Assigned by:
    • nvd@nist.gov (Primary)
    • security@ubuntu.com (Secondary)
  • The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.
    Assigned by: security@ubuntu.com (Secondary)

References for CVE-2021-32553

Products affected by CVE-2021-32553

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