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    CVE-2020-25725

    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.

    Published:Nov 21, 2020
    Last Modified:Nov 21, 2024
    EPS:Nov 21, 2020
    EPSS Score:0.00181
    CVSS Score:5

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Xpdfreader
    Product
    Xpdf

    Exploits

    https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-25725https://forum.xpdfreader.com/viewtopic.php?f=3&t=41915https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-25725https://forum.xpdfreader.com/viewtopic.php?f=3&t=41915

    Common Weakness Enumeration

    CWE-416 Use After Free

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High