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| author | Lars-Dominik Braun <PromyLOPh@lavabit.com> | 2009-11-28 12:23:45 +0100 |
|---|---|---|
| committer | Lars-Dominik Braun <PromyLOPh@lavabit.com> | 2009-11-28 12:23:45 +0100 |
| commit | 7dff801f34a76dd7950fc1751ce5ee2978e9b32d (patch) | |
| tree | ff8122281a8caffb8091aaf89604925224a27052 /libpiano | |
| parent | e033ae190e67674064a2e089874b5a4185f8a654 (diff) | |
| download | pianobar-windows-7dff801f34a76dd7950fc1751ce5ee2978e9b32d.tar.gz pianobar-windows-7dff801f34a76dd7950fc1751ce5ee2978e9b32d.tar.bz2 pianobar-windows-7dff801f34a76dd7950fc1751ce5ee2978e9b32d.zip | |
piano: Don't decrypt too short urls
Avoids invalid memory reads/writes
Diffstat (limited to 'libpiano')
| -rw-r--r-- | libpiano/src/xml.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libpiano/src/xml.c b/libpiano/src/xml.c index 8e8fb2a..185002d 100644 --- a/libpiano/src/xml.c +++ b/libpiano/src/xml.c @@ -240,7 +240,10 @@ static void PianoXmlParsePlaylistCb (const char *key, const ezxml_t value, char *urlTail = NULL, *urlTailCrypted = &valueStr[valueStrN - urlTailN]; - if ((urlTail = PianoDecryptString (urlTailCrypted)) != NULL) { + /* don't try to decrypt if string is too short (=> invalid memory + * reads/writes) */ + if (valueStrN > urlTailN && + (urlTail = PianoDecryptString (urlTailCrypted)) != NULL) { if ((song->audioUrl = calloc (valueStrN + 1, sizeof (*song->audioUrl))) != NULL) { memcpy (song->audioUrl, valueStr, valueStrN - urlTailN); |