Bug 1903296 (CVE-2020-27819) - CVE-2020-27819 libxls: NULL pointer dereference via crafted xls file
Summary: CVE-2020-27819 libxls: NULL pointer dereference via crafted xls file
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2020-27819
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1903297
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-12-01 19:20 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-02-22 18:00 UTC (History)
1 user (show)

Fixed In Version: libxls 1.6.2
Doc Type: If docs needed, set a value
Doc Text:
An issue was discovered in libxls before and including 1.6.1 when reading Microsoft Excel files. A NULL pointer dereference vulnerability exists when parsing XLS cells in libxls/xls2csv.c:199. It could allow a remote attacker to cause a denial of service via crafted XLS file.
Clone Of:
Environment:
Last Closed: 2020-12-01 23:33:51 UTC
Embargoed:

Attachments (Terms of Use)

Description Guilherme de Almeida Suckevicz 2020-12-01 19:20:36 UTC 
An issue was discovered in libxls reading Excel files before 1.6.1. A NULL pointer dereference vulnerability exists when parsing xls cells in libxls/xls2csv.c:199. It could allow a remote attacker to cause a denial of service via crafted xls file.

Reference:
https://github.com/libxls/libxls/issues/84
Comment 1 Guilherme de Almeida Suckevicz 2020-12-01 19:20:50 UTC 
Created libxls tracking bugs for this issue:

Affects: fedora-all [bug 1903297]
Comment 2 Product Security DevOps Team 2020-12-01 23:33:51 UTC 
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.
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