What is CVE-2023-1521?

CVE-2023-1521 is a high-severity vulnerability in Mozilla Sccache, classified under Untrusted Search Path. CVSS score: 7.8/10. Published 2024-11-26.

How severe is CVE-2023-1521?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2023-1521 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Mozilla Sccache

CVE-2023-1521

On Linux the sccache client can execute arbitrary code with the privileges of a local sccache server, by preloading the code in a shared library passed to LD_PRELOAD. If the server is run as root (which is the default when installing the snap package https://snapcraft.io/sccache ), this means a user running the sccache client can get root privileges.

EPSS: 0.004 (28.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Mozilla Sccache — versions 0

Weakness classification (CWE)

CWE-426 — Untrusted Search Path

Public proof-of-concept exploits

References

security@mozilla.org (Exploit, third-party-advisory)
security@mozilla.org (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2023-1521?: CVE-2023-1521 is a high-severity vulnerability in Mozilla Sccache, classified under Untrusted Search Path. CVSS score: 7.8/10. Published 2024-11-26.
How severe is CVE-2023-1521?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2023-1521 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.