Bug 1899520 (CVE-2020-25725)
| Summary: | CVE-2020-25725 xpdf: sending crafted a PDF document to the pdftops tool could result in DoS | ||
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| Product: | [Other] Security Response | Reporter: | Michael Kaplan <mkaplan> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED UPSTREAM | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | pertusus, spotrh |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
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.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-11-19 17:28:49 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1899521, 1899522, 1899523 | ||
| Bug Blocks: | |||
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Description
Michael Kaplan
2020-11-19 13:28:55 UTC
Acknowledgments: Name: Mike Zhang (Pangu Lab) External References: https://forum.xpdfreader.com/viewtopic.php?f=3&t=41915 Created xpdf tracking bugs for this issue: Affects: epel-6 [bug 1899523] Affects: epel-7 [bug 1899522] Affects: fedora-all [bug 1899521] This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products. |