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105
backport-CVE-2018-16301.patch
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105
backport-CVE-2018-16301.patch
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@ -0,0 +1,105 @@
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From 8ab211a7ec728bb0ad8c766c8eeb12deb0a13b86 Mon Sep 17 00:00:00 2001
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From: Guy Harris <gharris@sonic.net>
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Date: Wed, 30 Sep 2020 11:37:30 -0700
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Subject: [PATCH] Handle very large -f files by rejecting them.
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_read(), on Windows, has a 32-bit size argument and a 32-bit return
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value, so reject -f files that have more than 2^31-1 characters.
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Add some #defines so that, on Windows, we use _fstati64 to get the size
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of that file, to handle large files.
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Don't assume that our definition for ssize_t is the same size as size_t;
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by the time we want to print the return value of the read, we know it'll
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fit into an int, so just cast it to int and print it with %d.
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(cherry picked from commit faf8fb70af3a013e5d662b8283dec742fd6b1a77)
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---
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netdissect-stdinc.h | 16 +++++++++++++++-
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tcpdump.c | 15 ++++++++++++---
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2 files changed, 27 insertions(+), 4 deletions(-)
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diff --git a/netdissect-stdinc.h b/netdissect-stdinc.h
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index 8282c5846..9941c2a16 100644
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--- a/netdissect-stdinc.h
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+++ b/netdissect-stdinc.h
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@@ -149,10 +149,17 @@
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#ifdef _MSC_VER
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#define stat _stat
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#define open _open
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-#define fstat _fstat
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#define read _read
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#define close _close
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#define O_RDONLY _O_RDONLY
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+
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+/*
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+ * We define our_fstat64 as _fstati64, and define our_statb as
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+ * struct _stati64, so we get 64-bit file sizes.
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+ */
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+#define our_fstat _fstati64
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+#define our_statb struct _stati64
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+
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#endif /* _MSC_VER */
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/*
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@@ -211,6 +218,13 @@ typedef char* caddr_t;
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#include <arpa/inet.h>
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+/*
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+ * We should have large file support enabled, if it's available,
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+ * so just use fstat as our_fstat and struct stat as our_statb.
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+ */
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+#define our_fstat fstat
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+#define our_statb struct stat
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+
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#endif /* _WIN32 */
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#ifndef HAVE___ATTRIBUTE__
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diff --git a/tcpdump.c b/tcpdump.c
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index 043bda1d7..8f27ba2a4 100644
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--- a/tcpdump.c
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+++ b/tcpdump.c
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@@ -108,6 +108,7 @@ The Regents of the University of California. All rights reserved.\n";
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#endif /* HAVE_CAP_NG_H */
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#endif /* HAVE_LIBCAP_NG */
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+#include "netdissect-stdinc.h"
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#include "netdissect.h"
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#include "interface.h"
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#include "addrtoname.h"
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@@ -861,15 +862,22 @@ read_infile(char *fname)
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{
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register int i, fd, cc;
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register char *cp;
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- struct stat buf;
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+ our_statb buf;
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fd = open(fname, O_RDONLY|O_BINARY);
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if (fd < 0)
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error("can't open %s: %s", fname, pcap_strerror(errno));
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- if (fstat(fd, &buf) < 0)
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+ if (our_fstat(fd, &buf) < 0)
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error("can't stat %s: %s", fname, pcap_strerror(errno));
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+ /*
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+ * Reject files whose size doesn't fit into an int; a filter
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+ * *that* large will probably be too big.
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+ */
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+ if (buf.st_size > INT_MAX)
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+ error("%s is too large", fname);
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+
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cp = malloc((u_int)buf.st_size + 1);
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if (cp == NULL)
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error("malloc(%d) for %s: %s", (u_int)buf.st_size + 1,
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@@ -878,7 +886,8 @@ read_infile(char *fname)
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if (cc < 0)
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error("read %s: %s", fname, pcap_strerror(errno));
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if (cc != buf.st_size)
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- error("short read %s (%d != %d)", fname, cc, (int)buf.st_size);
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+ error("short read %s (%d != %d)", fname, (int) cc,
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+ (int)buf.st_size);
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close(fd);
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/* replace "# comment" with spaces */
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33
tcpdump.spec
33
tcpdump.spec
@ -1,7 +1,7 @@
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Name: tcpdump
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Epoch: 14
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Version: 4.9.3
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Release: 5
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Release: 8
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Summary: A network traffic monitoring tool
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License: BSD with advertising
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URL: http://www.tcpdump.org
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@ -20,9 +20,10 @@ Patch0009: 0009-Change-n-flag-to-nn-in-TESTonce.patch
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Patch0011: 0011-Evp-cipher-buffers.patch
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Patch0012: 0012-Add-printing-support-for-vsockmon-devices.patch
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Patch0013: CVE-2020-8037.patch
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Patch0014: backport-CVE-2018-16301.patch
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Requires(pre): shadow-utils
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BuildRequires: automake openssl-devel libpcap-devel git-core gcc
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BuildRequires: automake openssl-devel libpcap-devel git-core gcc chrpath
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%define tcpslice_dir tcpslice-1.2a3
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@ -69,6 +70,8 @@ popd
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install -m755 tcpdump ${RPM_BUILD_ROOT}%{_sbindir}
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install -m644 tcpdump.1 ${RPM_BUILD_ROOT}%{_mandir}/man8/tcpdump.8
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chrpath -d %{buildroot}%{_sbindir}/tcpdump
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# fix section numbers
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sed -i 's/\(\.TH[a-zA-Z ]*\)[1-9]\(.*\)/\18\2/' \
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${RPM_BUILD_ROOT}%{_mandir}/man8/*
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@ -79,6 +82,9 @@ sed -i 's/\(\.TH[a-zA-Z ]*\)[1-9]\(.*\)/\18\2/' \
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-d / tcpdump 2> /dev/null
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exit 0
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%check
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make check
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%files
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%doc README.md CHANGES CREDITS
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%license LICENSE
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@ -90,11 +96,26 @@ exit 0
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%{_mandir}/man8/tcpdump.8*
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%changelog
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* Mon Dec 21 2020 wangxp006 <wangxp006@163.com> - 4.9.3-5
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- Type:CVE
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- ID:CVE-2020-8037
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* Wed Nov 08 2023 xingwei <xingwei14@h-partners.com> - 14:4.9.3-8
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- Type:bugfix
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- ID:NA
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- SUG:NA
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- DESC:fix CVE-2020-8037
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- DESC:remove rpath
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* Wed Sep 07 2022 gaihuiying <eaglegai@163.com> - 14:4.9.3-7
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- Type:bugfix
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- ID:NA
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- SUG:NA
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- DESC:enable check
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* Wed Aug 17 2022 gaihuiying <eaglegai@163.com> - 14:4.9.3-6
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- Type:CVE
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- ID:CVE-2018-16301
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- SUG:NA
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- DESC:fix CVE-2018-16301
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* Fri May 21 2021 gaihuiying <gaihuiying1@huawei.com> - 4.9.3-5
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- DESC:rebuild 4.9.3-5
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* Mon Dec 21 2020 wangxp006 <wangxp006@163.com> - 4.9.3-4
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- Type:CVE
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