diff options
Diffstat (limited to 'gnu/packages/patches/cracklib-CVE-2016-6318.patch')
| -rw-r--r-- | gnu/packages/patches/cracklib-CVE-2016-6318.patch | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/gnu/packages/patches/cracklib-CVE-2016-6318.patch b/gnu/packages/patches/cracklib-CVE-2016-6318.patch new file mode 100644 index 0000000000..4806ecaae9 --- /dev/null +++ b/gnu/packages/patches/cracklib-CVE-2016-6318.patch @@ -0,0 +1,95 @@ +Fix CVE-2016-6318. + +https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-6318 + +Patch copied from Red Hat: + +https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-6318 +https://bugzilla.redhat.com/attachment.cgi?id=1188599&action=diff + +It is not safe to pass words longer than STRINGSIZE further to cracklib +so the longbuffer cannot be longer than STRINGSIZE. +diff -up cracklib-2.9.0/lib/fascist.c.longgecos cracklib-2.9.0/lib/fascist.c +--- cracklib-2.9.0/lib/fascist.c.longgecos 2014-02-06 16:03:59.000000000 +0100 ++++ cracklib-2.9.0/lib/fascist.c 2016-08-08 12:05:40.279235815 +0200 +@@ -515,7 +515,7 @@ FascistGecosUser(char *password, const c + char gbuffer[STRINGSIZE]; + char tbuffer[STRINGSIZE]; + char *uwords[STRINGSIZE]; +- char longbuffer[STRINGSIZE * 2]; ++ char longbuffer[STRINGSIZE]; + + if (gecos == NULL) + gecos = ""; +@@ -596,38 +596,47 @@ FascistGecosUser(char *password, const c + { + for (i = 0; i < j; i++) + { +- strcpy(longbuffer, uwords[i]); +- strcat(longbuffer, uwords[j]); +- +- if (GTry(longbuffer, password)) ++ if (strlen(uwords[i]) + strlen(uwords[j]) < STRINGSIZE) + { +- return _("it is derived from your password entry"); +- } +- +- strcpy(longbuffer, uwords[j]); +- strcat(longbuffer, uwords[i]); ++ strcpy(longbuffer, uwords[i]); ++ strcat(longbuffer, uwords[j]); + +- if (GTry(longbuffer, password)) +- { +- return _("it's derived from your password entry"); ++ if (GTry(longbuffer, password)) ++ { ++ return _("it is derived from your password entry"); ++ } ++ ++ strcpy(longbuffer, uwords[j]); ++ strcat(longbuffer, uwords[i]); ++ ++ if (GTry(longbuffer, password)) ++ { ++ return _("it's derived from your password entry"); ++ } + } + +- longbuffer[0] = uwords[i][0]; +- longbuffer[1] = '\0'; +- strcat(longbuffer, uwords[j]); +- +- if (GTry(longbuffer, password)) ++ if (strlen(uwords[j]) < STRINGSIZE - 1) + { +- return _("it is derivable from your password entry"); ++ longbuffer[0] = uwords[i][0]; ++ longbuffer[1] = '\0'; ++ strcat(longbuffer, uwords[j]); ++ ++ if (GTry(longbuffer, password)) ++ { ++ return _("it is derivable from your password entry"); ++ } + } + +- longbuffer[0] = uwords[j][0]; +- longbuffer[1] = '\0'; +- strcat(longbuffer, uwords[i]); +- +- if (GTry(longbuffer, password)) ++ if (strlen(uwords[i]) < STRINGSIZE - 1) + { +- return _("it's derivable from your password entry"); ++ longbuffer[0] = uwords[j][0]; ++ longbuffer[1] = '\0'; ++ strcat(longbuffer, uwords[i]); ++ ++ if (GTry(longbuffer, password)) ++ { ++ return _("it's derivable from your password entry"); ++ } + } + } + } |