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| author | Stanislav Malyshev <stas@php.net> | 2014-05-11 20:29:27 -0700 |
|---|---|---|
| committer | Stanislav Malyshev <stas@php.net> | 2014-07-18 16:05:52 -0700 |
| commit | 7f527897fe3e333f43bbed67741287d355ab4b2b (patch) | |
| tree | 3da645b59ce5110cadb50988c6397f0785fa6cf5 | |
| parent | d4b67896ecb248796a0493a9d6205b22c7dff4e2 (diff) | |
| download | php-git-7f527897fe3e333f43bbed67741287d355ab4b2b.tar.gz | |
Fix bug #67252: convert_uudecode out-of-bounds read
| -rw-r--r-- | ext/standard/tests/strings/bug67252.phpt | 13 | ||||
| -rw-r--r-- | ext/standard/uuencode.c | 3 |
2 files changed, 16 insertions, 0 deletions
diff --git a/ext/standard/tests/strings/bug67252.phpt b/ext/standard/tests/strings/bug67252.phpt new file mode 100644 index 0000000000..80a6ebcf1c --- /dev/null +++ b/ext/standard/tests/strings/bug67252.phpt @@ -0,0 +1,13 @@ +--TEST-- +Bug #67252 (convert_uudecode out-of-bounds read) +--FILE-- +<?php + +$a = "M86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A86%A"."\n"."a."; +var_dump(convert_uudecode($a)); + +?> +--EXPECTF-- + +Warning: convert_uudecode(): The given parameter is not a valid uuencoded string in %s on line %d +bool(false) diff --git a/ext/standard/uuencode.c b/ext/standard/uuencode.c index f0142ed049..212ab706bb 100644 --- a/ext/standard/uuencode.c +++ b/ext/standard/uuencode.c @@ -151,6 +151,9 @@ PHPAPI int php_uudecode(char *src, int src_len, char **dest) /* {{{ */ } while (s < ee) { + if(s+4 > e) { + goto err; + } *p++ = PHP_UU_DEC(*s) << 2 | PHP_UU_DEC(*(s + 1)) >> 4; *p++ = PHP_UU_DEC(*(s + 1)) << 4 | PHP_UU_DEC(*(s + 2)) >> 2; *p++ = PHP_UU_DEC(*(s + 2)) << 6 | PHP_UU_DEC(*(s + 3)); |