The TIFFFetchNormalTag function in LibTiff 4.0.6 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) by setting the tags TIFF_SETGET_C16ASCII or TIFF_SETGET_C32_ASCII to values that access 0-byte arrays. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-9297.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libtiff | Libtiff | 4.0.6 (including) | 4.0.6 (including) |
| Opensuse | Opensuse | 13.2 (including) | 13.2 (including) |
| Tiff | Ubuntu | esm-infra-legacy/trusty | * |
| Tiff | Ubuntu | esm-infra/xenial | * |
| Tiff | Ubuntu | precise | * |
| Tiff | Ubuntu | precise/esm | * |
| Tiff | Ubuntu | trusty | * |
| Tiff | Ubuntu | trusty/esm | * |
| Tiff | Ubuntu | upstream | * |
| Tiff | Ubuntu | vivid/stable-phone-overlay | * |
| Tiff | Ubuntu | wily | * |
| Tiff | Ubuntu | xenial | * |
| Tiff | Ubuntu | yakkety | * |
Potential Mitigations
References
- http://bugzilla.maptools.org/show_bug.cgi?id=2593
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00017.html
- http://www.debian.org/security/2017/dsa-3762
- http://www.openwall.com/lists/oss-security/2016/11/18/15
- http://www.securityfocus.com/bid/94420
- https://security.gentoo.org/glsa/201701-16
- http://bugzilla.maptools.org/show_bug.cgi?id=2593
- http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00017.html
- http://www.debian.org/security/2017/dsa-3762
- http://www.openwall.com/lists/oss-security/2016/11/18/15
- http://www.securityfocus.com/bid/94420
- https://security.gentoo.org/glsa/201701-16