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CVE-2016-3621

The LZWEncode function in tif_lzw.c in the bmp2tiff tool in LibTIFF 4.0.6 and earlier, when the "...

8.8 HighFix available

The LZWEncode function in tif_lzw.c in the bmp2tiff tool in LibTIFF 4.0.6 and earlier, when the "-c lzw" option is used, allows remote attackers to cause a denial of service (buffer over-read) via a crafted BMP image.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.07%Up 0.9 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 8.8

The LZWEncode function in tif_lzw.c in the bmp2tiff tool in LibTIFF 4.0.6 and earlier, when the "-c lzw" option is used, allows remote attackers to cause a denial of service (buffer over-read) via a crafted BMP image.

Record
CVE-2016-3621
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-125
Updated
2026-11-02
CVE List No score

The LZWEncode function in tif_lzw.c in the bmp2tiff tool in LibTIFF 4.0.6 and earlier, when the "-c lzw" option is used, allows remote attackers to cause a denial of service (buffer over-read) via a crafted BMP image.

Record
CVE-2016-3621
Updated
2026-11-02
EUVDEUVD-2016-4647 No score

The LZWEncode function in tif_lzw.c in the bmp2tiff tool in LibTIFF 4.0.6 and earlier, when the "-c lzw" option is used, allows remote attackers to cause a denial of service (buffer over-read) via a crafted BMP image.

Record
EUVD-2016-4647
Updated
2026-11-03
GitHub AdvisoriesGHSA-h34f-8p6m-3w66 8.8

The LZWEncode function in tif_lzw.c in the bmp2tiff tool in LibTIFF 4.0.6 and earlier, when the "...

The LZWEncode function in tif_lzw.c in the bmp2tiff tool in LibTIFF 4.0.6 and earlier, when the "-c lzw" option is used, allows remote attackers to cause a denial of service (buffer over-read) via a crafted BMP image.

Record
GHSA-h34f-8p6m-3w66
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-125
Updated
2026-11-02
OSVALPINE-CVE-2016-3621 8.8

The LZWEncode function in tif_lzw.c in the bmp2tiff tool in LibTIFF 4.0.6 and earlier, when the "-c lzw" option is used, allows remote attackers to cause a denial of service (buffer over-read) via a crafted BMP image.

Record
ALPINE-CVE-2016-3621
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSV 8.8

The LZWEncode function in tif_lzw.c in the bmp2tiff tool in LibTIFF 4.0.6 and earlier, when the "-c lzw" option is used, allows remote attackers to cause a denial of service (buffer over-read) via a crafted BMP image.

Record
CVE-2016-3621
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVDEBIAN-CVE-2016-3621 8.8

The LZWEncode function in tif_lzw.c in the bmp2tiff tool in LibTIFF 4.0.6 and earlier, when the "-c lzw" option is used, allows remote attackers to cause a denial of service (buffer over-read) via a crafted BMP image.

Record
DEBIAN-CVE-2016-3621
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2016-3621 8.8

The LZWEncode function in tif_lzw.c in the bmp2tiff tool in LibTIFF 4.0.6 and earlier, when the "-c lzw" option is used, allows remote attackers to cause a denial of service (buffer over-read) via a crafted BMP image.

Record
UBUNTU-CVE-2016-3621
CVSS 3.0
8.8 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVSUSE-SU-2018:3879-1 No score

Security update for tiff

This update for tiff fixes the following issues:

Security issues fixed:

  • CVE-2018-18661: Fixed NULL pointer dereference in the function LZWDecode in the file tif_lzw.c (bsc#1113672).
  • CVE-2018-12900: Fixed heap-based buffer overflow in the cpSeparateBufToContigBuf (bsc#1099257).
  • CVE-2017-9147: Fixed invalid read in the _TIFFVGetField function in tif_dir.c, that allowed remote attackers to cause a DoS via acrafted TIFF file (bsc#1040322).
  • CVE-2017-9117: Fixed BMP images processing that was verified without biWidth and biHeight values (bsc#1040080).
  • CVE-2017-17942: Fixed issue in the function PackBitsEncode that could have led to a heap overflow and caused a DoS (bsc#1074186).
  • CVE-2016-9273: Fixed heap-based buffer overflow issue (bsc#1010163).
  • CVE-2016-5319: Fixed heap-based buffer overflow in PackBitsEncode (bsc#983440).
  • CVE-2016-3621: Fixed out-of-bounds read in the bmp2tiff tool (lzw packing) (bsc#974448).
  • CVE-2016-3620: Fixed out-of-bounds read in the bmp2tiff tool (zip packing) (bsc#974447)
  • CVE-2016-3619: Fixed out-of-bounds read in the bmp2tiff tool (none packing) (bsc#974446)
  • CVE-2015-8870: Fixed integer overflow in tools/bmp2tiff.c that allowed remote attackers to causea DOS (bsc#1014461).

Non-security issues fixed:

  • asan_build: build ASAN included
  • debug_build: build more suitable for debugging
Record
SUSE-SU-2018:3879-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
tiff
Alpine:v3.2
 before 4.0.7-r0
4.0.7-r0
tiff
Alpine:v3.3
 before 4.0.7-r0
4.0.7-r0
tiff
Alpine:v3.4
 before 4.0.7-r0
4.0.7-r0
tiff
Debian:12
 before 4.0.6-3
4.0.6-3
tiff
Debian:13
 before 4.0.6-3
4.0.6-3
tiff
Debian:14
 before 4.0.6-3
4.0.6-3
tiff
Debian:7
From an advisory covering 17 CVEs
 before 4.0.2-6+deb7u7, plus listed versions
4.0.2-64.0.2-6+deb7u14.0.2-6+deb7u24.0.2-6+deb7u34.0.2-6+deb7u44.0.2-6+deb7u54.0.2-6+deb7u6
4.0.2-6+deb7u7
tiff
SUSE:Linux Enterprise Software Development Kit 11 SP4
From an advisory covering 11 CVEs
 before 3.8.2-141.169.22.1
3.8.2-141.169.22.1
tiff
SUSE:Linux Enterprise Server 11 SP4
From an advisory covering 11 CVEs
 before 3.8.2-141.169.22.1
3.8.2-141.169.22.1
tiff
SUSE:Linux Enterprise Server for SAP Applications 11 SP4
From an advisory covering 11 CVEs
 before 3.8.2-141.169.22.1
3.8.2-141.169.22.1
tiff
Ubuntu:Pro:14.04:LTS
 All versions, plus listed versions
4.0.2-4ubuntu34.0.3-5ubuntu14.0.3-64.0.3-6ubuntu14.0.3-7
Show 27 moreShow less
4.0.3-7ubuntu0.14.0.3-7ubuntu0.24.0.3-7ubuntu0.34.0.3-7ubuntu0.44.0.3-7ubuntu0.64.0.3-7ubuntu0.74.0.3-7ubuntu0.84.0.3-7ubuntu0.94.0.3-7ubuntu0.104.0.3-7ubuntu0.114.0.3-7ubuntu0.11+esm14.0.3-7ubuntu0.11+esm24.0.3-7ubuntu0.11+esm34.0.3-7ubuntu0.11+esm44.0.3-7ubuntu0.11+esm54.0.3-7ubuntu0.11+esm64.0.3-7ubuntu0.11+esm74.0.3-7ubuntu0.11+esm84.0.3-7ubuntu0.11+esm94.0.3-7ubuntu0.11+esm104.0.3-7ubuntu0.11+esm114.0.3-7ubuntu0.11+esm124.0.3-7ubuntu0.11+esm134.0.3-7ubuntu0.11+esm144.0.3-7ubuntu0.11+esm154.0.3-7ubuntu0.11+esm164.0.3-7ubuntu0.11+esm17
 None known
tiff
Ubuntu:Pro:16.04:LTS
 All versions, plus listed versions
4.0.3-12.3ubuntu24.0.5-14.0.6-14.0.6-1ubuntu0.14.0.6-1ubuntu0.2
Show 25 moreShow less
4.0.6-1ubuntu0.34.0.6-1ubuntu0.44.0.6-1ubuntu0.54.0.6-1ubuntu0.64.0.6-1ubuntu0.74.0.6-1ubuntu0.84.0.6-1ubuntu0.8+esm14.0.6-1ubuntu0.8+esm24.0.6-1ubuntu0.8+esm34.0.6-1ubuntu0.8+esm44.0.6-1ubuntu0.8+esm64.0.6-1ubuntu0.8+esm74.0.6-1ubuntu0.8+esm84.0.6-1ubuntu0.8+esm94.0.6-1ubuntu0.8+esm104.0.6-1ubuntu0.8+esm114.0.6-1ubuntu0.8+esm124.0.6-1ubuntu0.8+esm134.0.6-1ubuntu0.8+esm144.0.6-1ubuntu0.8+esm154.0.6-1ubuntu0.8+esm164.0.6-1ubuntu0.8+esm174.0.6-1ubuntu0.8+esm184.0.6-1ubuntu0.8+esm194.0.6-1ubuntu0.8+esm20
 None known

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-3621 is a high vulnerability (CVSS 8.8) in Libtiff, published October 3, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.07%, the 81st percentile. Fixed in tiff 4.0.7-r0.

References

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