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d0c8c66068
This patch is based on the work of the patch from Thorsten Glaser (MirBSD) [1] [1] http://www.mirbsd.org/cvs.cgi/src/gnu/usr.bin/cvs/src/rsh-client.c.diff?r1=1.6;r2=1.7
30 lines
862 B
Diff
30 lines
862 B
Diff
--- a/src/rsh-client.c.orig 2005-10-02 17:17:21.000000000 +0200
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+++ b/src/rsh-client.c 2017-11-07 16:56:06.957370469 +0100
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@@ -53,7 +53,7 @@
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char *cvs_server = (root->cvs_server != NULL
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? root->cvs_server : getenv ("CVS_SERVER"));
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int i = 0;
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- /* This needs to fit "rsh", "-b", "-l", "USER", "host",
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+ /* This needs to fit "rsh", "-b", "-l", "USER", "--", "host",
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"cmd (w/ args)", and NULL. We leave some room to grow. */
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char *rsh_argv[10];
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@@ -97,6 +97,9 @@
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rsh_argv[i++] = root->username;
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}
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+ /* Only non-option arguments from here. (CVE-2017-12836) */
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+ rsh_argv[i++] = "--";
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+
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rsh_argv[i++] = root->hostname;
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rsh_argv[i++] = cvs_server;
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rsh_argv[i++] = "server";
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@@ -171,6 +174,7 @@
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*p++ = root->username;
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}
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+ *p++ = "--";
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*p++ = root->hostname;
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*p++ = command;
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*p++ = NULL;
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