gnu: pcre2: Fix CVE-2017-8786.
* gnu/packages/patches/pcre2-CVE-2017-8786.patch: New file. * gnu/local.mk (dist_patch_DATA): Add it. * gnu/packages/pcre.scm (pcre2)[source]: Use it.master
Leo Famulari
parent
86ab11205e
commit
37f46a4bc5
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@ -859,6 +859,7 @@ dist_patch_DATA = \
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%D%/packages/patches/patch-hurd-path-max.patch \
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%D%/packages/patches/pcre-CVE-2017-7186.patch \
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%D%/packages/patches/pcre2-CVE-2017-7186.patch \
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%D%/packages/patches/pcre2-CVE-2017-8786.patch \
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%D%/packages/patches/perl-autosplit-default-time.patch \
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%D%/packages/patches/perl-deterministic-ordering.patch \
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%D%/packages/patches/perl-finance-quote-unuse-mozilla-ca.patch \
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@ -0,0 +1,155 @@
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Fix CVE-2017-8786:
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8786
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https://bugs.exim.org/show_bug.cgi?id=2079
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https://blogs.gentoo.org/ago/2017/04/29/libpcre-heap-based-buffer-overflow-write-in-pcre2test-c/
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Patch copied from upstream source repository:
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https://vcs.pcre.org/pcre2?view=revision&revision=696
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https://vcs.pcre.org/pcre2?view=revision&revision=697
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--- trunk/doc/pcre2api.3 2017/03/21 16:48:40 695
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+++ trunk/doc/pcre2api.3 2017/03/21 17:46:21 696
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@@ -1,4 +1,4 @@
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-.TH PCRE2API 3 "24 December 2016" "PCRE2 10.23"
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+.TH PCRE2API 3 "21 March 2017" "PCRE2 10.30"
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.SH NAME
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PCRE2 - Perl-compatible regular expressions (revised API)
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.sp
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@@ -2633,8 +2633,8 @@
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A text message for an error code from any PCRE2 function (compile, match, or
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auxiliary) can be obtained by calling \fBpcre2_get_error_message()\fP. The code
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is passed as the first argument, with the remaining two arguments specifying a
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-code unit buffer and its length, into which the text message is placed. Note
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-that the message is returned in code units of the appropriate width for the
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+code unit buffer and its length in code units, into which the text message is
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+placed. The message is returned in code units of the appropriate width for the
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library that is being used.
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.P
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The returned message is terminated with a trailing zero, and the function
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@@ -3321,6 +3321,6 @@
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.rs
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.sp
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.nf
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-Last updated: 23 December 2016
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-Copyright (c) 1997-2016 University of Cambridge.
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+Last updated: 21 March 2017
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+Copyright (c) 1997-2017 University of Cambridge.
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.fi
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--- trunk/src/pcre2_error.c 2017/03/21 16:48:40 695
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+++ trunk/src/pcre2_error.c 2017/03/21 17:46:21 696
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@@ -271,7 +271,7 @@
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Arguments:
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enumber error number
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buffer where to put the message (zero terminated)
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- size size of the buffer
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+ size size of the buffer in code units
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Returns: length of message if all is well
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negative on error
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--- trunk/src/pcre2test.c 2017/03/21 17:46:21 696
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+++ trunk/src/pcre2test.c 2017/03/21 18:36:13 697
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@@ -1017,9 +1017,9 @@
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if (test_mode == PCRE8_MODE) \
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r = pcre2_get_error_message_8(a,G(b,8),G(G(b,8),_size)); \
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else if (test_mode == PCRE16_MODE) \
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- r = pcre2_get_error_message_16(a,G(b,16),G(G(b,16),_size)); \
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+ r = pcre2_get_error_message_16(a,G(b,16),G(G(b,16),_size/2)); \
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else \
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- r = pcre2_get_error_message_32(a,G(b,32),G(G(b,32),_size))
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+ r = pcre2_get_error_message_32(a,G(b,32),G(G(b,32),_size/4))
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#define PCRE2_GET_OVECTOR_COUNT(a,b) \
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if (test_mode == PCRE8_MODE) \
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@@ -1399,6 +1399,9 @@
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/* ----- Common macros for two-mode cases ----- */
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+#define BYTEONE (BITONE/8)
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+#define BYTETWO (BITTWO/8)
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+
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#define CASTFLD(t,a,b) \
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((test_mode == G(G(PCRE,BITONE),_MODE))? (t)(G(a,BITONE)->b) : \
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(t)(G(a,BITTWO)->b))
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@@ -1481,9 +1484,9 @@
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#define PCRE2_GET_ERROR_MESSAGE(r,a,b) \
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if (test_mode == G(G(PCRE,BITONE),_MODE)) \
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- r = G(pcre2_get_error_message_,BITONE)(a,G(b,BITONE),G(G(b,BITONE),_size)); \
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+ r = G(pcre2_get_error_message_,BITONE)(a,G(b,BITONE),G(G(b,BITONE),_size/BYTEONE)); \
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else \
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- r = G(pcre2_get_error_message_,BITTWO)(a,G(b,BITTWO),G(G(b,BITTWO),_size))
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+ r = G(pcre2_get_error_message_,BITTWO)(a,G(b,BITTWO),G(G(b,BITTWO),_size/BYTETWO))
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#define PCRE2_GET_OVECTOR_COUNT(a,b) \
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if (test_mode == G(G(PCRE,BITONE),_MODE)) \
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@@ -1904,7 +1907,7 @@
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#define PCRE2_DFA_MATCH(a,b,c,d,e,f,g,h,i,j) \
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a = pcre2_dfa_match_16(G(b,16),(PCRE2_SPTR16)c,d,e,f,G(g,16),h,i,j)
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#define PCRE2_GET_ERROR_MESSAGE(r,a,b) \
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- r = pcre2_get_error_message_16(a,G(b,16),G(G(b,16),_size))
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+ r = pcre2_get_error_message_16(a,G(b,16),G(G(b,16),_size/2))
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#define PCRE2_GET_OVECTOR_COUNT(a,b) a = pcre2_get_ovector_count_16(G(b,16))
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#define PCRE2_GET_STARTCHAR(a,b) a = pcre2_get_startchar_16(G(b,16))
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#define PCRE2_JIT_COMPILE(r,a,b) r = pcre2_jit_compile_16(G(a,16),b)
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@@ -2000,7 +2003,7 @@
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#define PCRE2_DFA_MATCH(a,b,c,d,e,f,g,h,i,j) \
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a = pcre2_dfa_match_32(G(b,32),(PCRE2_SPTR32)c,d,e,f,G(g,32),h,i,j)
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#define PCRE2_GET_ERROR_MESSAGE(r,a,b) \
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- r = pcre2_get_error_message_32(a,G(b,32),G(G(b,32),_size))
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+ r = pcre2_get_error_message_32(a,G(b,32),G(G(b,32),_size/4))
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#define PCRE2_GET_OVECTOR_COUNT(a,b) a = pcre2_get_ovector_count_32(G(b,32))
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#define PCRE2_GET_STARTCHAR(a,b) a = pcre2_get_startchar_32(G(b,32))
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#define PCRE2_JIT_COMPILE(r,a,b) r = pcre2_jit_compile_32(G(a,32),b)
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--- trunk/src/pcre2test.c 2017/03/21 16:48:40 695
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+++ trunk/src/pcre2test.c 2017/03/21 17:46:21 696
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@@ -2889,7 +2889,7 @@
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{
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if (pbuffer32 != NULL) free(pbuffer32);
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pbuffer32_size = 4*len + 4;
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- if (pbuffer32_size < 256) pbuffer32_size = 256;
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+ if (pbuffer32_size < 512) pbuffer32_size = 512;
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pbuffer32 = (uint32_t *)malloc(pbuffer32_size);
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if (pbuffer32 == NULL)
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{
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@@ -7600,7 +7600,8 @@
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int errcode;
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char *endptr;
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-/* Ensure the relevant non-8-bit buffer is available. */
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+/* Ensure the relevant non-8-bit buffer is available. Ensure that it is at
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+least 128 code units, because it is used for retrieving error messages. */
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#ifdef SUPPORT_PCRE2_16
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if (test_mode == PCRE16_MODE)
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@@ -7620,7 +7621,7 @@
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#ifdef SUPPORT_PCRE2_32
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if (test_mode == PCRE32_MODE)
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{
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- pbuffer32_size = 256;
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+ pbuffer32_size = 512;
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pbuffer32 = (uint32_t *)malloc(pbuffer32_size);
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if (pbuffer32 == NULL)
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{
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--- trunk/testdata/testinput2 2017/03/21 16:48:40 695
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+++ trunk/testdata/testinput2 2017/03/21 17:46:21 696
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@@ -5017,4 +5017,6 @@
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/(?<!\1((?U)1((?U))))(*F)/never_backslash_c,alt_bsux,anchored,extended
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+/\g{3/
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+
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# End of testinput2
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--- trunk/testdata/testoutput2 2017/03/21 16:48:40 695
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+++ trunk/testdata/testoutput2 2017/03/21 17:46:21 696
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@@ -15570,6 +15570,9 @@
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/(?<!\1((?U)1((?U))))(*F)/never_backslash_c,alt_bsux,anchored,extended
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+/\g{3/
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+Failed: error 157 at offset 2: \g is not followed by a braced, angle-bracketed, or quoted name/number or by a plain number
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+
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# End of testinput2
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Error -63: PCRE2_ERROR_BADDATA (unknown error number)
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Error -62: bad serialized data
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@ -92,7 +92,8 @@ POSIX regular expression API.")
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(sha256
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(base32
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"0vn5g0mkkp99mmzpissa06hpyj6pk9s4mlwbjqrjvw3ihy8rpiyz"))
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(patches (search-patches "pcre2-CVE-2017-7186.patch"))))
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(patches (search-patches "pcre2-CVE-2017-7186.patch"
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"pcre2-CVE-2017-8786.patch"))))
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(build-system gnu-build-system)
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(inputs `(("bzip2" ,bzip2)
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("readline" ,readline)
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