import libexif-0.6.22-5.el8_3

This commit is contained in:
CentOS Sources 2020-12-11 06:11:58 +00:00 committed by Andrew Lukoshko
parent ea6a006ad7
commit 19dfba2e8a
2 changed files with 40 additions and 1 deletions

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@ -0,0 +1,32 @@
From 9266d14b5ca4e29b970fa03272318e5f99386e06 Mon Sep 17 00:00:00 2001
From: Marcus Meissner <marcus@jet.franken.de>
Date: Thu, 5 Nov 2020 09:50:08 +0100
Subject: [PATCH] fixed a incorrect overflow check that could be optimized
away.
inspired by:
https://android.googlesource.com/platform/external/libexif/+/8e7345f3bc0bad06ac369d6cbc1124c8ceaf7d4b
https://source.android.com/security/bulletin/2020-11-01
CVE-2020-0452
---
NEWS | 3 ++-
libexif/exif-entry.c | 4 ++--
2 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/libexif/exif-entry.c b/libexif/exif-entry.c
index 3fc0ff9..4b866ce 100644
--- a/libexif/exif-entry.c
+++ b/libexif/exif-entry.c
@@ -1371,8 +1371,8 @@ exif_entry_get_value (ExifEntry *e, char *val, unsigned int maxlen)
{
unsigned char *utf16;
- /* Sanity check the size to prevent overflow */
- if (e->size+sizeof(uint16_t)+1 < e->size) break;
+ /* Sanity check the size to prevent overflow. Note EXIF files are 64kb at most. */
+ if (e->size >= 65536 - sizeof(uint16_t)*2) break;
/* The tag may not be U+0000-terminated , so make a local
U+0000-terminated copy before converting it */

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@ -1,7 +1,7 @@
Summary: Library for extracting extra information from image files
Name: libexif
Version: 0.6.22
Release: 4%{?dist}
Release: 5%{?dist}
Group: System Environment/Libraries
License: LGPLv2+
URL: https://libexif.github.io/
@ -13,6 +13,9 @@ Source1: strip-gettext-nondeterminism
# https://bugzilla.redhat.com/show_bug.cgi?id=1847761
Patch0: CVE-2020-0181-CVE-2020-0198.patch
# https://github.com/libexif/libexif/commit/9266d14b5ca4e29b970fa03272318e5f99386e06
Patch1: CVE-2020-0452.patch
BuildRequires: autoconf
BuildRequires: automake
BuildRequires: doxygen
@ -82,6 +85,10 @@ make check
%doc libexif-api.html
%changelog
* Mon Dec 07 2020 Richard Hughes <rhughes@redhat.com> - 0.6.22-5
- Fix CVE-2020-0452
- Resolves: #1902593
* Thu Jun 25 2020 Michael Catanzaro <mcatanzaro@redhat.com> - 0.6.22-4
- Add patch for CVE-2020-0181/CVE-2020-0198
- Resolves: #1847753