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authorPierre Neidhardt <ambrevar@gmail.com>2018-06-16 16:54:53 +0200
committerLudovic Courtès <ludo@gnu.org>2018-06-17 01:40:13 +0200
commita14de83213a8d4fe6befced5a3dcf05e40fe4513 (patch)
treeede1ffa1fb873c137b3dedee2996b03775a2dc03 /gnu/packages
parented2ae0dc7f44d884ed1329cba457f5479cafd2ba (diff)
downloadguix-a14de83213a8d4fe6befced5a3dcf05e40fe4513.tar.gz
guix-a14de83213a8d4fe6befced5a3dcf05e40fe4513.zip
gnu: upx: Fix CVE-2017-15056.
* gnu/packages/patches/upx-protect-against-bad-crafted-input.patch: New file. * gnu/packages/compression.scm (upx)[source]: Use it. * gnu/local.mk (dist_patch_DATA): Add it. Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Diffstat (limited to 'gnu/packages')
-rw-r--r--gnu/packages/compression.scm8
-rw-r--r--gnu/packages/patches/upx-fix-CVE-2017-15056.patch96
2 files changed, 103 insertions, 1 deletions
diff --git a/gnu/packages/compression.scm b/gnu/packages/compression.scm
index 8f062049a6..9cb0917dae 100644
--- a/gnu/packages/compression.scm
+++ b/gnu/packages/compression.scm
@@ -2209,7 +2209,8 @@ decompression is a little bit slower.")
version "/" name "-" version "-src.tar.xz"))
(sha256
(base32
- "08anybdliqsbsl6x835iwzljahnm9i7v26icdjkcv33xmk6p5vw1"))))
+ "08anybdliqsbsl6x835iwzljahnm9i7v26icdjkcv33xmk6p5vw1"))
+ (patches (search-patches "upx-fix-CVE-2017-15056.patch"))))
(build-system gnu-build-system)
(native-inputs `(("perl" ,perl)
("ucl" ,ucl)))
@@ -2241,6 +2242,11 @@ decompression is a little bit slower.")
#t))
)))
(home-page "https://upx.github.io/")
+ ;; CVE-2017-16869 is about Mach-O files which is not of a big concern for Guix.
+ ;; See https://github.com/upx/upx/issues/146 and
+ ;; https://nvd.nist.gov/vuln/detail?vulnId=CVE-2017-16869.
+ ;; The issue will be fixed after version 3.94.
+ (properties `((lint-hidden-cve . ("CVE-2017-16869"))))
(synopsis "Compression tool for executables")
(description
"The Ultimate Packer for eXecutables (UPX) is an executable file
diff --git a/gnu/packages/patches/upx-fix-CVE-2017-15056.patch b/gnu/packages/patches/upx-fix-CVE-2017-15056.patch
new file mode 100644
index 0000000000..525980e73e
--- /dev/null
+++ b/gnu/packages/patches/upx-fix-CVE-2017-15056.patch
@@ -0,0 +1,96 @@
+From 3e0c2966dffb5dadb512a476ef4be3d0cc51c2be Mon Sep 17 00:00:00 2001
+From: Pierre Neidhardt <ambrevar@gmail.com>
+Date: Sat, 16 Jun 2018 16:35:00 +0200
+Subject: [PATCH] Protect against bad crafted input
+
+Also check for wrap-around when checking oversize involving e_shoff and e_shnum.
+
+raised by https://github.com/upx/upx/pull/190
+ modified: p_lx_elf.cpp
+---
+ src/p_lx_elf.cpp | 30 ++++++++++++++++++++++++++++++
+ 1 file changed, 30 insertions(+)
+
+diff --git a/src/p_lx_elf.cpp b/src/p_lx_elf.cpp
+index 822a7652..41e805ee 100644
+--- a/src/p_lx_elf.cpp
++++ b/src/p_lx_elf.cpp
+@@ -235,8 +235,17 @@ PackLinuxElf32::PackLinuxElf32help1(InputFile *f)
+ sz_phdrs = 0;
+ return;
+ }
++ if (0==e_phnum) throwCantUnpack("0==e_phnum");
+ e_phoff = get_te32(&ehdri.e_phoff);
++ unsigned const last_Phdr = e_phoff + e_phnum * sizeof(Elf32_Phdr);
++ if (last_Phdr < e_phoff || (unsigned long)file_size < last_Phdr) {
++ throwCantUnpack("bad e_phoff");
++ }
+ e_shoff = get_te32(&ehdri.e_shoff);
++ unsigned const last_Shdr = e_shoff + e_shnum * sizeof(Elf32_Shdr);
++ if (last_Shdr < e_shoff || (unsigned long)file_size < last_Shdr) {
++ throwCantUnpack("bad e_shoff");
++ }
+ sz_phdrs = e_phnum * e_phentsize;
+
+ if (f && Elf32_Ehdr::ET_DYN!=e_type) {
+@@ -599,8 +608,17 @@ PackLinuxElf64::PackLinuxElf64help1(InputFile *f)
+ sz_phdrs = 0;
+ return;
+ }
++ if (0==e_phnum) throwCantUnpack("0==e_phnum");
+ e_phoff = get_te64(&ehdri.e_phoff);
++ upx_uint64_t const last_Phdr = e_phoff + e_phnum * sizeof(Elf64_Phdr);
++ if (last_Phdr < e_phoff || (unsigned long)file_size < last_Phdr) {
++ throwCantUnpack("bad e_phoff");
++ }
+ e_shoff = get_te64(&ehdri.e_shoff);
++ upx_uint64_t const last_Shdr = e_shoff + e_shnum * sizeof(Elf64_Shdr);
++ if (last_Shdr < e_shoff || (unsigned long)file_size < last_Shdr) {
++ throwCantUnpack("bad e_shoff");
++ }
+ sz_phdrs = e_phnum * e_phentsize;
+
+ if (f && Elf64_Ehdr::ET_DYN!=e_type) {
+@@ -3763,6 +3781,9 @@ void PackLinuxElf64::pack4(OutputFile *fo, Filter &ft)
+
+ void PackLinuxElf64::unpack(OutputFile *fo)
+ {
++ if (e_phoff != sizeof(Elf64_Ehdr)) {// Phdrs not contiguous with Ehdr
++ throwCantUnpack("bad e_phoff");
++ }
+ unsigned const c_phnum = get_te16(&ehdri.e_phnum);
+ upx_uint64_t old_data_off = 0;
+ upx_uint64_t old_data_len = 0;
+@@ -3828,6 +3849,9 @@ void PackLinuxElf64::unpack(OutputFile *fo)
+ unsigned total_out = 0;
+ unsigned c_adler = upx_adler32(NULL, 0);
+ unsigned u_adler = upx_adler32(NULL, 0);
++ if ((MAX_ELF_HDR - sizeof(Elf64_Ehdr))/sizeof(Elf64_Phdr) < u_phnum) {
++ throwCantUnpack("bad compressed e_phnum");
++ }
+
+ // Packed ET_EXE has no PT_DYNAMIC.
+ // Packed ET_DYN has original PT_DYNAMIC for info needed by rtld.
+@@ -4383,6 +4407,9 @@ Elf64_Sym const *PackLinuxElf64::elf_lookup(char const *name) const
+
+ void PackLinuxElf32::unpack(OutputFile *fo)
+ {
++ if (e_phoff != sizeof(Elf32_Ehdr)) {// Phdrs not contiguous with Ehdr
++ throwCantUnpack("bad e_phoff");
++ }
+ unsigned const c_phnum = get_te16(&ehdri.e_phnum);
+ unsigned old_data_off = 0;
+ unsigned old_data_len = 0;
+@@ -4449,6 +4476,9 @@ void PackLinuxElf32::unpack(OutputFile *fo)
+ unsigned total_out = 0;
+ unsigned c_adler = upx_adler32(NULL, 0);
+ unsigned u_adler = upx_adler32(NULL, 0);
++ if ((MAX_ELF_HDR - sizeof(Elf32_Ehdr))/sizeof(Elf32_Phdr) < u_phnum) {
++ throwCantUnpack("bad compressed e_phnum");
++ }
+
+ // Packed ET_EXE has no PT_DYNAMIC.
+ // Packed ET_DYN has original PT_DYNAMIC for info needed by rtld.
+--
+2.17.0
+