ID3v2: Ignore non-ASCII TDAT and TIME frames in TDRC conversion

CHANGELOG.md

@@ -39,12 +39,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - When skipping invalid frames in `ParsingMode::{BestAttempt, Relaxed}`, the parser will no longer be able to go out of the bounds
     of the frame content ([issue](https://github.com/Serial-ATA/lofty-rs/issues/458)) ([PR](https://github.com/Serial-ATA/lofty-rs/pull/459))
 - **MP4**: Support for flag items (ex. `cpil`) of any size (not just 1 byte) ([issue](https://github.com/Serial-ATA/lofty-rs/issues/457)) ([PR](https://github.com/Serial-ATA/lofty-rs/pull/460))
-- **Fuzzing** (Thanks [@qarmin](https://github.com/qarmin)!) ([PR](https://github.com/Serial-ATA/lofty-rs/pull/476)):
+- **Fuzzing** (Thanks [@qarmin](https://github.com/qarmin)!) ([PR](https://github.com/Serial-ATA/lofty-rs/pull/476)) ([PR](https://github.com/Serial-ATA/lofty-rs/pull/479)):
     - **MusePack**: Fix panic when ID3v2 tag sizes exceed the stream length ([issue](https://github.com/Serial-ATA/lofty-rs/issues/470))
     - **WAV**: Fix panic when calculating bit depth with abnormally large `bytes_per_sample` ([issue](https://github.com/Serial-ATA/lofty-rs/issues/471))
     - **WavPack***: Fix panic when encountering wrongly sized blocks ([issue](https://github.com/Serial-ATA/lofty-rs/issues/472))
     - **WavPack***: Fix panic when encountering zero-sized blocks ([issue](https://github.com/Serial-ATA/lofty-rs/issues/473))
     - **MPEG**: Fix panic when APE tags are incorrectly sized ([issue](https://github.com/Serial-ATA/lofty-rs/issues/474))
+    - **ID3v2**: Fix panic when parsing non-ASCII `TDAT` and `TIME` frames in `TDRC` conversion ([issue](https://github.com/Serial-ATA/lofty-rs/issues/477))
 
 ## [0.21.1] - 2024-08-28
 

lofty/src/id3/v2/read.rs

@@ -70,49 +70,49 @@ fn construct_tdrc_from_v3(tag: &mut Id3v2Tag) {
 		return;
 	}
 
-	let date = tag.get_text(&TDAT);
-	let mut date_used = false;
-
-	let time = tag.get_text(&TIME);
-	let mut time_used = false;
-
 	let mut tdrc = Timestamp {
 		year: year_frame.timestamp.year,
 		..Timestamp::default()
 	};
+
+	let mut date_used = false;
+	let mut time_used = false;
 	'build: {
-		if let Some(date) = date {
-			if date.len() != 4 {
-				log::warn!("Invalid TDAT frame, retaining.");
-				break 'build;
-			}
-
-			let (Ok(day), Ok(month)) = (date[..2].parse::<u8>(), date[2..].parse::<u8>()) else {
-				log::warn!("Invalid TDAT frame, retaining.");
-				break 'build;
-			};
-
-			tdrc.month = Some(month);
-			tdrc.day = Some(day);
-			date_used = true;
-
-			if let Some(time) = time {
-				if time.len() != 4 {
-					log::warn!("Invalid TIME frame, retaining.");
-					break 'build;
-				}
+		let Some(date) = tag.get_text(&TDAT) else {
+			break 'build;
+		};
+
+		if date.len() != 4 || !date.is_ascii() {
+			log::warn!("Invalid TDAT frame, retaining.");
+			break 'build;
+		}
+
+		let (Ok(day), Ok(month)) = (date[..2].parse::<u8>(), date[2..].parse::<u8>()) else {
+			log::warn!("Invalid TDAT frame, retaining.");
+			break 'build;
+		};
 
-				let (Ok(hour), Ok(minute)) = (time[..2].parse::<u8>(), time[2..].parse::<u8>())
-				else {
-					log::warn!("Invalid TIME frame, retaining.");
-					break 'build;
-				};
+		tdrc.month = Some(month);
+		tdrc.day = Some(day);
+		date_used = true;
 
-				tdrc.hour = Some(hour);
-				tdrc.minute = Some(minute);
-				time_used = true;
-			}
+		let Some(time) = tag.get_text(&TIME) else {
+			break 'build;
+		};
+
+		if time.len() != 4 || !time.is_ascii() {
+			log::warn!("Invalid TIME frame, retaining.");
+			break 'build;
 		}
+
+		let (Ok(hour), Ok(minute)) = (time[..2].parse::<u8>(), time[2..].parse::<u8>()) else {
+			log::warn!("Invalid TIME frame, retaining.");
+			break 'build;
+		};
+
+		tdrc.hour = Some(hour);
+		tdrc.minute = Some(minute);
+		time_used = true;
 	}
 
 	tag.insert(Frame::Timestamp(TimestampFrame::new(

lofty/tests/fuzz/mpegfile_read_from.rs

@@ -26,6 +26,13 @@ fn crash3() {
 	let _ = MpegFile::read_from(&mut reader, ParseOptions::new());
 }
 
+#[test_log::test]
+fn crash4() {
+	let mut reader =
+		get_reader("mpegfile_read_from/crash-b8f2fc10e2ab6c4e60c371aea3949871fc61a39b_minimized");
+	let _ = MpegFile::read_from(&mut reader, ParseOptions::new());
+}
+
 #[test_log::test]
 fn oom1() {
 	oom_test::<MpegFile>("mpegfile_read_from/oom-f8730cbfa5682ab12343ccb70de9b71a061ef4d0");