Denial of service in LibTIFF
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2019-7663 |
| CWE-ID | CWE-476 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
LibTIFF Universal components / Libraries / Libraries used by multiple products |
| Vendor | LibTIFF |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) NULL pointer dereference
EUVDB-ID: #VU17675
Risk: Low
CVSSv3.1: 3.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C]
CVE-ID: CVE-2019-7663
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an invalid address dereference condition that exists in the TIFFWriteDirectoryTagTransferfunction, as defined in the libtiff/tif_dirwrite.c source code file. A remote attacker can trick the victim into accessing a Tagged Image File Format (TIFF) file that submits malicious input and trigger a segmentation fault in the cpSeparateBufToContigBuf function in the tiffcp.c file, resulting in a DoS condition.
MitigationInstall updates from vendor's website.
Vulnerable software versionsLibTIFF: 4.0.10
External linkshttp://bugzilla.maptools.org/show_bug.cgi?id=2833
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
