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CVE-2020-25725

MEDIUM
5.5
CVSS Score
Published: November 21, 2020 at 05:29 AM UTC
Updated: June 17, 2026 at 03:07 AM UTC
3 products affected across 3 vendorsFedoraXpdfXpdf

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Severity
MEDIUM5.5
Exploit prediction
EPSS 1%

Description

In Xpdf 4.02, SplashOutputDev::endType3Char(GfxState *state) SplashOutputDev.cc:3079 is trying to use the freed `t3GlyphStack->cache`, which causes an `heap-use-after-free` problem. The codes of a previous fix for nested Type 3 characters wasn't correctly handling the case where a Type 3 char referred to another char in the same Type 3 font.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

References (4)

x_refsource_CONFIRMExploitIssue TrackingThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-25725
x_refsource_MISCExploitVendor Advisory
Source: [email protected]
https://forum.xpdfreader.com/viewtopic.php?f=3&t=41915
Vendor Advisoryx_refsource_FEDORAMailing ListThird Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ZUU5QG6SSVRTKZTR3A72LDRVZETEI63/
Vendor Advisoryx_refsource_FEDORAMailing ListThird Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VLOYVJSM54IL6I5RY4QTJGRS7PIEG44X/

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

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