diff --git a/cve_bin_tool/checkers/README.md b/cve_bin_tool/checkers/README.md
index 82f58a64d4..02f2cd58e5 100644
--- a/cve_bin_tool/checkers/README.md
+++ b/cve_bin_tool/checkers/README.md
@@ -35,7 +35,7 @@ from cve_bin_tool.checkers import Checker
 class CurlChecker(Checker):
 ```
 
-Every checker must contain following 4 class attributes specific to product(ex: curl)
+Every checker may contain following 5 class attributes specific to product(ex: curl)
 you are making checker for:
 
 1. CONTAINS_PATTERNS - list of commonly found strings in the binary of the product
@@ -43,6 +43,7 @@ you are making checker for:
 3. VERSION_PATTERNS - list of version patterns found in binary of the product.
 4. VENDOR_PRODUCT - list of vendor product pairs for the product as they appear in
 NVD.
+5. IGNORE_PATTERNS (optional) - list of patterns that could cause false positives (e.g. error messages that mention specific product/versions)
 
 `CONTAINS_PATTERN`, `FILENAME_PATTERNS` and `VERSION_PATTERNS` supports regex to cover
 wide range of use cases.
diff --git a/cve_bin_tool/checkers/__init__.py b/cve_bin_tool/checkers/__init__.py
index 6718ef963a..7be1943d28 100644
--- a/cve_bin_tool/checkers/__init__.py
+++ b/cve_bin_tool/checkers/__init__.py
@@ -28,6 +28,7 @@
     "binutils",
     "bird",
     "bison",
+    "bluez",
     "boinc",
     "botan",
     "bro",
@@ -328,6 +329,10 @@ def __new__(cls, name, bases, props):
                     raise InvalidCheckerError(
                         f"Checker {name} has a VENDOR_PRODUCT string that is not lowercase"
                     )
+        if cls.IGNORE_PATTERNS is None:
+            cls.IGNORE_PATTERNS = []
+        else:
+            cls.IGNORE_PATTERNS = list(map(re.compile, cls.IGNORE_PATTERNS))
         # Compile regex
         cls.CONTAINS_PATTERNS = list(map(re.compile, cls.CONTAINS_PATTERNS))
         cls.VERSION_PATTERNS = list(map(re.compile, cls.VERSION_PATTERNS))
@@ -342,6 +347,7 @@ class Checker(metaclass=CheckerMetaClass):
     VERSION_PATTERNS: list[str] = []
     FILENAME_PATTERNS: list[str] = []
     VENDOR_PRODUCT: list[tuple[str, str]] = []
+    IGNORE_PATTERNS: list[str] = []
 
     def guess_contains(self, lines):
         if any(pattern.search(lines) for pattern in self.CONTAINS_PATTERNS):
@@ -358,6 +364,8 @@ def get_version(self, lines, filename):
             version_info["is_or_contains"] = "contains"
 
         if "is_or_contains" in version_info:
-            version_info["version"] = regex_find(lines, self.VERSION_PATTERNS)
+            version_info["version"] = regex_find(
+                lines, self.VERSION_PATTERNS, self.IGNORE_PATTERNS
+            )
 
         return version_info
diff --git a/cve_bin_tool/checkers/bluez.py b/cve_bin_tool/checkers/bluez.py
new file mode 100644
index 0000000000..bdd5d1edb4
--- /dev/null
+++ b/cve_bin_tool/checkers/bluez.py
@@ -0,0 +1,24 @@
+# Copyright (C) 2023 Orange
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+
+"""
+CVE checker for bluez
+
+https://www.cvedetails.com/product/35116/Bluez-Bluez.html?vendor_id=8316
+https://www.cvedetails.com/product/35329/Bluez-Project-Bluez.html?vendor_id=3242
+
+"""
+from __future__ import annotations
+
+from cve_bin_tool.checkers import Checker
+
+
+class BluezChecker(Checker):
+    CONTAINS_PATTERNS: list[str] = []
+    FILENAME_PATTERNS: list[str] = []
+    VERSION_PATTERNS = [
+        r"bluez-([0-9]+\.[0-9]+)",
+        r"([0-9]+\.[0-9]+)\r?\n[a-zA-Z :]*(?:BlueZ|hcidump|hcitool|OBEX daemon)",
+    ]
+    VENDOR_PRODUCT = [("bluez", "bluez"), ("bluez_project", "bluez")]
diff --git a/cve_bin_tool/checkers/libtiff.py b/cve_bin_tool/checkers/libtiff.py
index b5c47f8e75..8e4a88067a 100644
--- a/cve_bin_tool/checkers/libtiff.py
+++ b/cve_bin_tool/checkers/libtiff.py
@@ -19,5 +19,5 @@ class LibtiffChecker(Checker):
         r'TIFF directory is missing required "StripByteCounts" field, calculating from imagelength',
     ]
     FILENAME_PATTERNS = [r"libtiff.so."]
-    VERSION_PATTERNS = [r"LIBTIFF, Version ([0-9]+\.[0-9]+\.[0-9]+)"]
+    VERSION_PATTERNS = [r"LIBTIFF, Version ([0-9]+\.[0-9]+\.[0-9]+)\r?\nCopyright"]
     VENDOR_PRODUCT = [("libtiff", "libtiff")]
diff --git a/cve_bin_tool/checkers/pango.py b/cve_bin_tool/checkers/pango.py
index c0cc2ca2c1..ab3a369a4b 100644
--- a/cve_bin_tool/checkers/pango.py
+++ b/cve_bin_tool/checkers/pango.py
@@ -16,5 +16,8 @@
 class PangoChecker(Checker):
     CONTAINS_PATTERNS: list[str] = []
     FILENAME_PATTERNS: list[str] = []
-    VERSION_PATTERNS = [r"([0-9]+\.[0-9]+\.[0-9]+)\r?\n[pP]ango"]
+    VERSION_PATTERNS = [
+        r"([0-9]+\.[0-9]+\.[0-9]+)\r?\n/etc/pango",
+        r"([0-9]+\.[0-9]+\.[0-9]+)\r?\nPango version",
+    ]
     VENDOR_PRODUCT = [("gnome", "pango"), ("pango", "pango")]
diff --git a/cve_bin_tool/checkers/proftpd.py b/cve_bin_tool/checkers/proftpd.py
index 2b09ede9c2..8debead123 100644
--- a/cve_bin_tool/checkers/proftpd.py
+++ b/cve_bin_tool/checkers/proftpd.py
@@ -17,5 +17,5 @@
 class ProftpdChecker(Checker):
     CONTAINS_PATTERNS: list[str] = []
     FILENAME_PATTERNS: list[str] = []
-    VERSION_PATTERNS = [r"ProFTPD ([0-9]+\.[0-9]+\.[0-9a-z]+)"]
+    VERSION_PATTERNS = [r"ProFTPD ([0-9]+\.[0-9]+\.[0-9a-z]+) "]
     VENDOR_PRODUCT = [("proftpd_project", "proftpd"), ("proftpd", "proftpd")]
diff --git a/cve_bin_tool/checkers/tcpdump.py b/cve_bin_tool/checkers/tcpdump.py
index 6c90f2511d..e6aaebfbce 100644
--- a/cve_bin_tool/checkers/tcpdump.py
+++ b/cve_bin_tool/checkers/tcpdump.py
@@ -21,6 +21,6 @@ class TcpdumpChecker(Checker):
         r"tcpdump-([0-9]+\.[0-9]+\.[0-9]+)",
         r"([0-9]+\.[0-9]+\.[0-9]+)\r?\n[0-9a-f]*lookup_(?:emem|protoid)",
         r"Running\r?\n([0-9]+\.[0-9]+\.[0-9]+)\r?\n0123456789",
-        r"tcpdump[0-9a-zA-Z ,!'%:_=\(\)\\\.\-\r\n]*([0-9]+\.[0-9]+\.[0-9]+)",
+        r"tcpdump[0-9a-zA-Z ,!'%:_=\(\)\\\.\-\r\n]*\r?\n([0-9]+\.[0-9]+\.[0-9]+)",
     ]
     VENDOR_PRODUCT = [("tcpdump", "tcpdump")]
diff --git a/cve_bin_tool/util.py b/cve_bin_tool/util.py
index 47f0345e36..f489634aae 100644
--- a/cve_bin_tool/util.py
+++ b/cve_bin_tool/util.py
@@ -93,7 +93,9 @@ def __missing__(self, key: str) -> list[CVE] | set[str]:
         return self[key]
 
 
-def regex_find(lines: str, version_patterns: list[Pattern[str]]) -> str:
+def regex_find(
+    lines: str, version_patterns: list[Pattern[str]], ignore: list[Pattern[str]]
+) -> str:
     """Search a set of lines to find a match for the given regex"""
     new_guess = ""
 
@@ -101,6 +103,9 @@ def regex_find(lines: str, version_patterns: list[Pattern[str]]) -> str:
         match = pattern.search(lines)
         if match:
             new_guess = match.group(1).strip()
+            for i in ignore:
+                if str(i) in str(new_guess) or str(new_guess) in str(i):
+                    new_guess = ""
             break
     if new_guess != "":
         new_guess = new_guess.replace("_", ".")
diff --git a/test/condensed-downloads/bluez-5.66-5.fc38.aarch64.rpm.tar.gz b/test/condensed-downloads/bluez-5.66-5.fc38.aarch64.rpm.tar.gz
new file mode 100644
index 0000000000..be80db557c
Binary files /dev/null and b/test/condensed-downloads/bluez-5.66-5.fc38.aarch64.rpm.tar.gz differ
diff --git a/test/condensed-downloads/bluez-daemon_5.50-5_x86_64.ipk.tar.gz b/test/condensed-downloads/bluez-daemon_5.50-5_x86_64.ipk.tar.gz
new file mode 100644
index 0000000000..3e02b24ab9
Binary files /dev/null and b/test/condensed-downloads/bluez-daemon_5.50-5_x86_64.ipk.tar.gz differ
diff --git a/test/condensed-downloads/bluez_5.50-1.2~deb10u2_amd64.deb.tar.gz b/test/condensed-downloads/bluez_5.50-1.2~deb10u2_amd64.deb.tar.gz
new file mode 100644
index 0000000000..ac279ee0da
Binary files /dev/null and b/test/condensed-downloads/bluez_5.50-1.2~deb10u2_amd64.deb.tar.gz differ
diff --git a/test/condensed-downloads/libtiff5_4.2.0-1+deb11u4_amd64.deb.tar.gz b/test/condensed-downloads/libtiff5_4.2.0-1+deb11u4_amd64.deb.tar.gz
new file mode 100644
index 0000000000..44d723e00b
Binary files /dev/null and b/test/condensed-downloads/libtiff5_4.2.0-1+deb11u4_amd64.deb.tar.gz differ
diff --git a/test/condensed-downloads/libtiff_4.1.0-1_x86_64.ipk.tar.gz b/test/condensed-downloads/libtiff_4.1.0-1_x86_64.ipk.tar.gz
new file mode 100644
index 0000000000..bb4c3c11b0
Binary files /dev/null and b/test/condensed-downloads/libtiff_4.1.0-1_x86_64.ipk.tar.gz differ
diff --git a/test/test_checkers.py b/test/test_checkers.py
index 8ff1f94b75..061cd9f7cf 100644
--- a/test/test_checkers.py
+++ b/test/test_checkers.py
@@ -1,6 +1,8 @@
 # Copyright (C) 2021 Intel Corporation
 # SPDX-License-Identifier: GPL-3.0-or-later
 
+from __future__ import annotations
+
 import re
 import sys
 
@@ -25,11 +27,13 @@ class MyChecker(Checker):
             VERSION_PATTERNS = [r"for"]
             FILENAME_PATTERNS = [r"myproduct"]
             VENDOR_PRODUCT = [("myvendor", "myproduct")]
+            IGNORE_PATTERNS = [r"ignore"]
 
         assert type(MyChecker.CONTAINS_PATTERNS[0]) == Pattern
         assert type(MyChecker.VERSION_PATTERNS[0]) == Pattern
         assert type(MyChecker.FILENAME_PATTERNS[0]) == Pattern
         assert type(MyChecker.VENDOR_PRODUCT[0]) == VendorProductPair
+        assert type(MyChecker.IGNORE_PATTERNS[0]) == Pattern
 
     def test_no_vpkg(self):
         with pytest.raises(AssertionError) as e:
@@ -39,6 +43,7 @@ class MyChecker(Checker):
                 VERSION_PATTERNS = [r"for"]
                 FILENAME_PATTERNS = [r"myproduct"]
                 PRODUCT_NAME = "mychecker"
+                IGNORE_PATTERNS = [r"ignore"]
 
         assert e.value.args[0] == "MyChecker needs at least one vendor product pair"
 
@@ -139,3 +144,20 @@ def test_filename_is(self, checker_name, file_name, expected_results):
 
                 for result, expected_result in zip(results, expected_results):
                     assert result["is_or_contains"] == "is"
+
+    class MyFakeChecker(Checker):
+        CONTAINS_PATTERNS: list[str] = []
+        FILENAME_PATTERNS: list[str] = [r"checker"]
+        VERSION_PATTERNS = [r"mychecker-([0-9].[0-9]+)"]
+        VENDOR_PRODUCT = [("my", "checker")]
+        IGNORE_PATTERNS = [r"mychecker-5.6"]
+
+    string = "Some other lines. \n Ignore this version pattern mychecker-5.6. \n Consider this version pattern mychecker-5.8. \n Some more lines."
+    lines = string.split("\n")
+    checker = MyFakeChecker()
+
+    result1 = checker.get_version(lines[1], "")
+    assert result1["version"] == "UNKNOWN"
+
+    result2 = checker.get_version(lines[2], "")
+    assert result2["version"] == "5.8"
diff --git a/test/test_data/bluez.py b/test/test_data/bluez.py
new file mode 100644
index 0000000000..b3d2ae8f68
--- /dev/null
+++ b/test/test_data/bluez.py
@@ -0,0 +1,33 @@
+# Copyright (C) 2022 Orange
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+mapping_test_data = [
+    {"product": "bluez", "version": "5.28", "version_strings": ["bluez-5.28"]},
+    {
+        "product": "bluez",
+        "version": "5.50",
+        "version_strings": ["5.50\nUsage: hcidump"],
+    },
+    {"product": "bluez", "version": "5.50", "version_strings": ["5.50\nhcitool"]},
+    {"product": "bluez", "version": "5.66", "version_strings": ["5.66\nBlueZ"]},
+]
+package_test_data = [
+    {
+        "url": "http://rpmfind.net/linux/fedora/linux/development/rawhide/Everything/aarch64/os/Packages/b/",
+        "package_name": "bluez-5.66-5.fc38.aarch64.rpm",
+        "product": "bluez",
+        "version": "5.66",
+    },
+    {
+        "url": "http://ftp.fr.debian.org/debian/pool/main/b/bluez/",
+        "package_name": "bluez_5.50-1.2~deb10u2_amd64.deb",
+        "product": "bluez",
+        "version": "5.50",
+    },
+    {
+        "url": "https://downloads.openwrt.org/releases/packages-19.07/x86_64/packages/",
+        "package_name": "bluez-daemon_5.50-5_x86_64.ipk",
+        "product": "bluez",
+        "version": "5.50",
+    },
+]
diff --git a/test/test_data/libtiff.py b/test/test_data/libtiff.py
index 387cdd57bf..f8e07a8c90 100644
--- a/test/test_data/libtiff.py
+++ b/test/test_data/libtiff.py
@@ -7,7 +7,7 @@
         "version": "4.0.2",
         "version_strings": [
             'TIFF directory is missing required \\"StripByteCounts\\" field, calculating from imagelength',
-            "LIBTIFF, Version 4.0.2",
+            "LIBTIFF, Version 4.0.2\nCopyright",
         ],
     }
 ]
@@ -24,4 +24,16 @@
         "product": "libtiff",
         "version": "4.0.3",
     },
+    {
+        "url": "http://ftp.fr.debian.org/debian/pool/main/t/tiff/",
+        "package_name": "libtiff5_4.2.0-1+deb11u4_amd64.deb",
+        "product": "libtiff",
+        "version": "4.2.0",
+    },
+    {
+        "url": "https://downloads.openwrt.org/releases/packages-19.07/x86_64/packages/",
+        "package_name": "libtiff_4.1.0-1_x86_64.ipk",
+        "product": "libtiff",
+        "version": "4.1.0",
+    },
 ]
diff --git a/test/test_data/lynx.py b/test/test_data/lynx.py
index f21d2d93ba..a0dcc9ba50 100644
--- a/test/test_data/lynx.py
+++ b/test/test_data/lynx.py
@@ -19,27 +19,23 @@
         "package_name": "lynx-2.9.0-dev.10.2.fc37.1.aarch64.rpm",
         "product": "lynx",
         "version": "2.9.0dev.10",
-        "other_products": ["proftpd"],
     },
     {
         "url": "http://rpmfind.net/linux/fedora-secondary/development/rawhide/Everything/ppc64le/os/Packages/l/",
         "package_name": "lynx-2.9.0-dev.10.2.fc37.1.ppc64le.rpm",
         "product": "lynx",
         "version": "2.9.0dev.10",
-        "other_products": ["proftpd"],
     },
     {
         "url": "http://ftp.fr.debian.org/debian/pool/main/l/lynx/",
         "package_name": "lynx_2.8.9dev11-1_arm64.deb",
         "product": "lynx",
         "version": "2.8.9dev.11",
-        "other_products": ["proftpd"],
     },
     {
         "url": "https://downloads.openwrt.org/releases/packages-19.07/x86_64/packages/",
         "package_name": "lynx_2.8.9rel.1-1_x86_64.ipk",
         "product": "lynx",
         "version": "2.8.9rel.1",
-        "other_products": ["proftpd"],
     },
 ]
diff --git a/test/test_data/pango.py b/test/test_data/pango.py
index 573427f38c..2281029047 100644
--- a/test/test_data/pango.py
+++ b/test/test_data/pango.py
@@ -2,11 +2,16 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 mapping_test_data = [
+    {
+        "product": "pango",
+        "version": "1.40.5",
+        "version_strings": ["1.40.5\n/etc/pango"],
+    },
     {
         "product": "pango",
         "version": "1.40.5",
         "version_strings": ["1.40.5\nPango version"],
-    }
+    },
 ]
 package_test_data = [
     {
diff --git a/test/test_data/proftpd.py b/test/test_data/proftpd.py
index 44e469924d..3b17865033 100644
--- a/test/test_data/proftpd.py
+++ b/test/test_data/proftpd.py
@@ -5,7 +5,7 @@
     {
         "product": "proftpd",
         "version": "1.3.8rc4",
-        "version_strings": ["ProFTPD 1.3.8rc4"],
+        "version_strings": ["ProFTPD 1.3.8rc4 "],
     }
 ]
 package_test_data = [
diff --git a/test/test_data/tcpdump.py b/test/test_data/tcpdump.py
index c549260910..4d33c2e5e2 100644
--- a/test/test_data/tcpdump.py
+++ b/test/test_data/tcpdump.py
@@ -23,6 +23,7 @@
         "version": "4.9.2",
         "version_strings": ["Running\n4.9.2\n0123456789"],
     },
+    {"product": "tcpdump", "version": "4.1.1", "version_strings": ["tcpdump\n4.1.1"]},
 ]
 package_test_data = [
     {