CVE-2020-15239

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Summary

CVECVE-2020-15239
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-10-06 19:15:00 UTC
Updated2020-10-23 03:09:00 UTC
DescriptionIn xmpp-http-upload before version 0.4.0, when the GET method is attacked, attackers can read files which have a `.data` suffix and which are accompanied by a JSON file with the `.meta` suffix. This can lead to Information Disclosure and in some shared-hosting scenarios also to circumvention of authentication or other limitations on the outbound (GET) traffic. For example, in a scenario where a single server has multiple instances of the application running (with separate DATA_ROOT settings), an attacker who has knowledge about the directory structure is able to read files from any other instance to which the process has read access. If instances have individual authentication (for example, HTTP authentication via a reverse proxy, source IP based filtering) or other restrictions (such as quotas), attackers may circumvent those limits in such a scenario by using the Directory Traversal to retrieve data from the other instances. If the associated XMPP server (or anyone knowing the SECRET_KEY) is malicious, they can write files outside the DATA_ROOT. The files which are written are constrained to have the `.meta` and the `.data` suffixes; the `.meta` file will contain the JSON with the Content-Type of the original request and the `.data` file will contain the payload. The issue is patched in version 0.4.0.

Risk And Classification

Problem Types: CWE-22

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Xmpp-http-upload Project Xmpp-http-upload All All All All
Application Xmpp-http-upload Project Xmpp-http-upload All All All All

References

ReferenceSourceLinkTags
xmpp-http-upload · PyPI MISC pypi.org Release Notes, Third Party Advisory
Simplify path handling, use safe_join by ChristianTacke · Pull Request #12 · horazont/xmpp-http-upload · GitHub MISC github.com Third Party Advisory
Simplify path handling, use safe_join · horazont/xmpp-http-upload@8205654 · GitHub MISC github.com Patch, Third Party Advisory
Directory Traversal vulnerability in GET/PUT allows attackers to Disclose Information or Write Files via a crafted GET/PUT request · Advisory · horazont/xmpp-http-upload · GitHub CONFIRM github.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 983211 Python (pip) Security Update for xmpp-http-upload (GHSA-hwv5-w8gm-fq9f)

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