Home/CVE/It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function
CVE

CVE-2021-32555

It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function

It was discovered that read_file() in apport/hookutils.py would follow symbolic links or open FIFOs. When this function is used by the xorg-hwe-18.04 package apport hooks, it could expose private data to other local users.

HIGH · CVSS 7.3 EPSS 0.00055
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-59Improper Link Resolution Before File Access ('Link Following')
CWE-59Improper Link Resolution Before File Access ('Link Following')
CWE-61UNIX Symbolic Link (Symlink) Following
▤

Affected Products & Versions

1
canonical ubuntu linuxall versions
▣

Scoring & Timeline

7.3
HIGH · CVSS v3.1 · security@ubuntu.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD12 Jun 2021 · 04:15 AM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:L
⚑

Vendor Advisories

2
usnUSN-4965-2
usnUSN-4965-1
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugs.launchpad.net/ubuntu/+source/apport/+bug/1917904Issue TrackingVendor Advisory
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