fix: update ffmpeg checker (#5096)

Update ffmpeg pattern to catch version on two digits (e.g. version 4.4
released in 2021: https://ffmpeg.org/releases/ffmpeg-4.4.tar.bz2)

Signed-off-by: Fabrice Fontaine <[email protected]>

Author: ffontaine

cve_bin_tool/checkers/ffmpeg.py

@@ -28,7 +28,7 @@ class FfmpegChecker(Checker):
         r"ffmpeg",
     ]
     VERSION_PATTERNS = [
-        r"%s version ([0-9]+\.[0-9]+\.[0-9]+)[a-zA-Z0-9 \(\)%~\-\r\n]*(?:avutil|FFmpeg)",
-        r"FFmpeg version n?([0-9]+\.[0-9]+\.[0-9]+)",
+        r"%s version ([0-9]+\.[0-9]+(\.[0-9]+)?)[a-zA-Z0-9 \(\)%~\-\r\n]*(?:avutil|FFmpeg)",
+        r"FFmpeg version n?([0-9]+\.[0-9]+(\.[0-9]+)?)",
     ]
     VENDOR_PRODUCT = [("ffmpeg", "ffmpeg")]

test/test_data/ffmpeg.py

@@ -27,6 +27,11 @@
         "version": "4.3.1",
         "version_strings": ["FFmpeg version n4.3.1"],
     },
+    {
+        "product": "ffmpeg",
+        "version": "4.4",
+        "version_strings": ["FFmpeg version 4.4"],
+    },
 ]
 package_test_data = [
     {