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c8 ... c8-beta

2 changed files with 19 additions and 17 deletions

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@ -1,23 +1,30 @@
From 803f49aaae16b7f2899e4769afdfc673a21fa9e8 Mon Sep 17 00:00:00 2001
From: Guido Draheim <guidod@gmx.de>
Date: Mon, 26 Feb 2024 23:17:12 +0100
Subject: [PATCH] #69 assert full zzip_file_header
From 18c6c043bd7d8f139f30e9c7749013115d5fc5b7 Mon Sep 17 00:00:00 2001
From: Valentin Lefebvre <valentin.lefebvre@suse.com>
Date: Wed, 20 Sep 2023 12:04:56 +0200
Subject: [PATCH] mmappend.c: Avoid invalid access for header entry
* zzip_disk_entry_to_file_header checking the pointer by substraction
instead of addition where it could lead to an invalid access memory.
* CVE-2020-18770
Signed-off-by: Valentin Lefebvre <valentin.lefebvre@suse.com>
---
zzip/mmapped.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
zzip/mmapped.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/zzip/mmapped.c b/zzip/mmapped.c
index 2071882..306ba51 100644
index 2071882..beb094d 100644
--- a/zzip/mmapped.c
+++ b/zzip/mmapped.c
@@ -276,7 +276,8 @@ struct zzip_file_header *
@@ -275,8 +275,9 @@ zzip_disk_entry_to_data(ZZIP_DISK * disk, struct zzip_disk_entry * entry)
struct zzip_file_header *
zzip_disk_entry_to_file_header(ZZIP_DISK * disk, struct zzip_disk_entry *entry)
{
zzip_byte_t *const ptr = disk->buffer + zzip_disk_entry_fileoffset(entry);
- zzip_byte_t *const ptr = disk->buffer + zzip_disk_entry_fileoffset(entry);
- if (disk->buffer > ptr || ptr >= disk->endbuf)
+ zzip_byte_t *const end = ptr + sizeof(struct zzip_file_header);
+ if (disk->buffer > ptr || end >= disk->endbuf || end <= NULL)
+ zzip_off_t off = zzip_disk_entry_fileoffset(entry);
+ zzip_byte_t *const ptr = disk->buffer + off;
+ if (disk->buffer > ptr || disk->buffer >= disk->endbuf - off)
{
errno = EBADMSG;
return 0;

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@ -1,7 +1,7 @@
Summary: Lightweight library to easily extract data from zip files
Name: zziplib
Version: 0.13.68
Release: 13%{?dist}
Release: 12%{?dist}
License: LGPLv2+ or MPLv1.1
Group: Applications/Archiving
URL: http://zziplib.sourceforge.net/
@ -147,11 +147,6 @@ make install DESTDIR=%{buildroot}
%{_mandir}/man3/*
%changelog
* Wed Feb 28 2024 Jakub Martisko <jamartis@redhat.com> - 0.13.68-13
- Fix CVE-2020-18770
Previous patch contained segfault bug
Resolves: RHEL-14966
* Tue Feb 06 2024 Jakub Martisko <jamartis@redhat.com> - 0.13.68-12
- Add the gating tests from the 8.8.0 branch
Resolves: RHEL-24429