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| author | Christoph M. Becker <cmbecker69@gmx.de> | 2020-12-11 16:47:42 +0100 |
|---|---|---|
| committer | Christoph M. Becker <cmbecker69@gmx.de> | 2020-12-15 11:44:53 +0100 |
| commit | a53d67ceac301cbd27c4f0f716d4fbcdb7db3407 (patch) | |
| tree | 749d827e69f6abc2eec6d04bfbdfff5fde4f6305 | |
| parent | c0a1c2c5ee950b4f283945ac3c02b78dc75fa75c (diff) | |
| download | php-git-a53d67ceac301cbd27c4f0f716d4fbcdb7db3407.tar.gz | |
Fix #77322: PharData::addEmptyDir('/') Possible integer overflow
`phar_path_check()` already strips a leading slash, so we must not
attempt to strip the trailing slash from an now empty directory name.
Closes GH-6508.
| -rw-r--r-- | NEWS | 4 | ||||
| -rw-r--r-- | ext/phar/tests/bug77322.phpt | 24 | ||||
| -rw-r--r-- | ext/phar/util.c | 2 |
3 files changed, 28 insertions, 2 deletions
@@ -31,7 +31,9 @@ PHP NEWS - Phar: . Fixed bug #73809 (Phar Zip parse crash - mmap fail). (cmb) - . Fixed #75102 (`PharData` says invalid checksum for valid tar). (cmb) + . Fixed bug #75102 (`PharData` says invalid checksum for valid tar). (cmb) + . Fixed bug #77322 (PharData::addEmptyDir('/') Possible integer overflow). + (cmb) - PDO MySQL: . Fixed bug #80458 (PDOStatement::fetchAll() throws for upsert queries). diff --git a/ext/phar/tests/bug77322.phpt b/ext/phar/tests/bug77322.phpt new file mode 100644 index 0000000000..b9e5ce4dba --- /dev/null +++ b/ext/phar/tests/bug77322.phpt @@ -0,0 +1,24 @@ +--TEST-- +Bug #77322 (PharData::addEmptyDir('/') Possible integer overflow) +--SKIPIF-- +<?php +if (!extension_loaded('phar')) die('skip phar extension not available'); +?> +--FILE-- +<?php +$zip = new PharData(__DIR__ . '/bug77322.zip'); +$zip->addEmptyDir('/'); +var_dump($zip->count()); + +$tar = new PharData(__DIR__ . '/bug77322.tar'); +$tar->addEmptyDir('/'); +var_dump($tar->count()); +?> +--EXPECT-- +int(1) +int(1) +--CLEAN-- +<?php +unlink(__DIR__ . '/bug77322.zip'); +unlink(__DIR__ . '/bug77322.tar'); +?> diff --git a/ext/phar/util.c b/ext/phar/util.c index 53982b0f85..354f0dbaac 100644 --- a/ext/phar/util.c +++ b/ext/phar/util.c @@ -567,7 +567,7 @@ phar_entry_data *phar_get_or_create_entry_data(char *fname, size_t fname_len, ch } else { etemp.flags = etemp.old_flags = PHAR_ENT_PERM_DEF_FILE; } - if (is_dir) { + if (is_dir && path_len) { etemp.filename_len--; /* strip trailing / */ path_len--; } |