CVE-2019-7663: Medium severity LibTIFF libtiff vulnerability
An Invalid Address dereference was discovered in TIFFWriteDirectoryTagTransferfunction in libtiff/tifdirwrite.c in LibTIFF 4.0.10, affecting the cpSeparateBufToContigBuf function in tiffcp.c. Remote attackers could leverage this vulnerability to cause a denial-of-service via a crafted tiff file. This is different from CVE-2018-12900.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/tiffto a version that resolves this vulnerability.Fixed in 4.2.0-1+deb11u5Fixed in 4.2.0-1+deb11u8Fixed in 4.5.0-6+deb12u4Fixed in 4.7.0-3+deb13u2Fixed in 4.7.0-3+deb13u3Fixed in 4.7.2-1 - Upgrade
Upgrade
libtiff (LibTIFF)to a version that resolves this vulnerability.Fixed in 4.0.10
Event History
Frequently Asked Questions
What is the severity of CVE-2019-7663?
CVE-2019-7663 has been rated as a high severity vulnerability due to its potential to cause denial-of-service conditions.
How do I fix CVE-2019-7663?
To fix CVE-2019-7663, update LibTIFF to version 4.2.0-1+deb11u5 or later.
Which systems are affected by CVE-2019-7663?
CVE-2019-7663 affects various systems running LibTIFF version 4.0.10 and certain Debian and Ubuntu versions.
What types of attacks can exploit CVE-2019-7663?
CVE-2019-7663 can be exploited by remote attackers using crafted TIFF files to trigger a denial-of-service.
What components of LibTIFF are affected by CVE-2019-7663?
CVE-2019-7663 specifically affects the TIFFWriteDirectoryTagTransferfunction in libtiff/tif_dirwrite.c.