CVE-2021-29421 : models/metadata.py in the pikepdf package 1.3.0 through 2.9.2 for Python allows

models/metadata.py in the pikepdf package 1.3.0 through 2.9.2 for Python allows XXE when parsing XMP metadata entries.

Published 2021-04-01 20:15:12

Updated 2022-12-03 14:25:01

Source MITRE

View at NVD, CVE.org

Vulnerability category: XML external entity (XXE) injection

Products affected by CVE-2021-29421

Fedoraproject » Fedora » Version: 32
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 33
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Matching versions
Pikepdf Project » Pikepdf
Versions from including (>=) 1.3.0 and up to, including, (<=) 2.9.2
cpe:2.3:a:pikepdf_project:pikepdf:*:*:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.37%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 56 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:P/I:N/A:N	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: None
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: None Availability: None

CWE-611 Improper Restriction of XML External Entity Reference

The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.

Assigned by: nvd@nist.gov (Primary)

https://github.com/pikepdf/pikepdf/blob/v2.10.0/docs/release_notes.rst#v2100

pikepdf/release_notes.rst at v2.10.0 · pikepdf/pikepdf · GitHub
Release Notes;Third Party Advisory
https://github.com/pikepdf/pikepdf/commit/3f38f73218e5e782fe411ccbb3b44a793c0b343a

Fix XXE vulnerability in XMP metadata parsing · pikepdf/pikepdf@3f38f73 · GitHub
Patch;Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3QFLBBYGEDNXJ7FS6PIWTVI4T4BUPGEQ/

[SECURITY] Fedora 33 Update: python-pikepdf-1.19.4-2.fc33 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/36P4HTLBJPO524WMQWW57N3QRF4RFSJG/

[SECURITY] Fedora 32 Update: python-pikepdf-1.19.4-2.fc32 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

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