🛡️ CVE-2015-8371 — composer

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-345 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Composer allows cache poisoning from other projects built on the same host

Composer before 2016-02-10 allows cache poisoning from other projects built on the same host. This results in attacker-controlled code entering a server-side build process. The issue occurs because of the way that dist packages are cached. The cache key is derived from the package name, the dist type, and certain other data from the package repository (which may simply be a commit hash, and thus can be found by an attacker). Versions through 1.0.0-alpha11 are affected, and 1.0.0 is unaffected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2015-8371 is classified as CWE-345: Insufficient Verification of Data Authenticity. Data is trusted without confirming it really came from the claimed source and was not altered.

Affected software

CVE-2015-8371 is recorded against 1 package.

  • composer/composer (fixed in 1.0.0)

Timeline and source

Published on 21 September 2023 and last revised on 16 February 2024. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

nvd.nist.gov (Advisory)
flyingmana.de (Web)
github.com (Web)
github.com (Web)
github.com (Package)
gitlab.com (Web)
flyingmana.de (Web)

CVE-2015-8371 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE CWE-345
Public Exploit ✅ No
Source OSV
Published 2023-09-21
Updated 2026-08-12
Modified 2024-02-16
Fix URL N/A

Affected Packages

Software From version Fixed in
composer/composer — 1.0.0

Similar Threats

Site Security Check

Is composer part of your stack?

CVE-2015-8371 is rated CVSS 8.0 High. BotEraser scans your installation against known CVE records and tells you whether this vulnerability applies to the versions you actually run.

Scan My Site Free →

No credit card required  ·  Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.