Your message dated Sat, 22 May 2021 16:34:16 +0000
with message-id <[email protected]>
and subject line unblock rxvt-unicode
has caused the Debian Bug report #988925,
regarding unblock: rxvt-unicode/9.22-11
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988925: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988925
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--- Begin Message ---
Package: release.debian.org
Severity: normal
User: [email protected]
Usertags: unblock
X-Debbugs-Cc: [email protected]
Please unblock package rxvt-unicode
Disables the ESC G Q escape sequence, which could cause the command '0'
to be executed. This addresses:
https://security-tracker.debian.org/tracker/CVE-2021-33477
[ Tests ]
None
[ Risks ]
Trivial fix cherry-picked from upstream VCS. Original commit from 2019.
[ Checklist ]
[x] all changes are documented in the d/changelog
[x] I reviewed all changes and I approve them
[x] attach debdiff against the package in testing
unblock rxvt-unicode/9.22-11
--
|)|/ Ryan Kavanagh | GPG: 4E46 9519 ED67 7734 268F
|\|\ https://rak.ac | BD95 8F7B F8FC 4A11 C97A
diff -Nru rxvt-unicode-9.22/debian/changelog rxvt-unicode-9.22/debian/changelog
--- rxvt-unicode-9.22/debian/changelog 2021-03-20 12:48:03.000000000 -0400
+++ rxvt-unicode-9.22/debian/changelog 2021-05-21 10:48:43.000000000 -0400
@@ -1,3 +1,10 @@
+rxvt-unicode (9.22-11) unstable; urgency=medium
+
+ * Disable ESC G Q escape sequence, 20_disable_escape_sequence.diff
+ (Closes: #988763, CVE-2021-33477)
+
+ -- Ryan Kavanagh <[email protected]> Fri, 21 May 2021 10:48:43 -0400
+
rxvt-unicode (9.22-10) unstable; urgency=medium
* Correct a mistake in 19_sigsegv_perl_environ.diff
diff -Nru rxvt-unicode-9.22/debian/patches/20_disable_escape_sequence.diff
rxvt-unicode-9.22/debian/patches/20_disable_escape_sequence.diff
--- rxvt-unicode-9.22/debian/patches/20_disable_escape_sequence.diff
1969-12-31 19:00:00.000000000 -0500
+++ rxvt-unicode-9.22/debian/patches/20_disable_escape_sequence.diff
2021-05-21 10:47:48.000000000 -0400
@@ -0,0 +1,25 @@
+Description: disable ESC G Q escape sequence
+Origin: http://cvs.schmorp.de/rxvt-unicode/src/command.C?r1=1.584&r2=1.585
+Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=988763
+Last-Update: 2021-05-21
+---
+This patch header follows DEP-3: http://dep.debian.net/deps/dep3/
+Index: rxvt-unicode/src/command.C
+===================================================================
+--- rxvt-unicode.orig/src/command.C 2019-02-07 15:12:08.000000000 -0500
++++ rxvt-unicode/src/command.C 2021-05-21 10:45:22.522127101 -0400
+@@ -2722,12 +2722,14 @@
+ }
+ break;
+
++#if 0 // disabled because embedded newlines can make exploits easier
+ /* kidnapped escape sequence: Should be 8.3.48 */
+ case C1_ESA: /* ESC G */
+ // used by original rxvt for rob nations own graphics mode
+ if (cmd_getc () == 'Q')
+ tt_printf ("\033G0\012"); /* query graphics - no graphics */
+ break;
++#endif
+
+ /* 8.3.63: CHARACTER TABULATION SET */
+ case C1_HTS: /* ESC H */
diff -Nru rxvt-unicode-9.22/debian/patches/series
rxvt-unicode-9.22/debian/patches/series
--- rxvt-unicode-9.22/debian/patches/series 2021-03-20 12:48:03.000000000
-0400
+++ rxvt-unicode-9.22/debian/patches/series 2021-05-21 10:44:44.000000000
-0400
@@ -9,3 +9,4 @@
17_unsafe_man.diff
18_expand_urxvt-tabbed.1.diff
19_sigsegv_perl_environ.diff
+20_disable_escape_sequence.diff
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Description: PGP signature
--- End Message ---
--- Begin Message ---
Unblocked.
--- End Message ---
