Double free vulnerability in the gdImagePngPtr function in libgd2 before 2.2.5 allows remote attackers to cause a denial of service via vectors related to a palette with no colors.
Weakness
The product calls free() twice on the same memory address.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libgd | Libgd | 2.2.4 (including) | 2.2.4 (including) |
| Libgd2 | Ubuntu | devel | * |
| Libgd2 | Ubuntu | esm-infra-legacy/trusty | * |
| Libgd2 | Ubuntu | esm-infra/xenial | * |
| Libgd2 | Ubuntu | trusty | * |
| Libgd2 | Ubuntu | trusty/esm | * |
| Libgd2 | Ubuntu | upstream | * |
| Libgd2 | Ubuntu | xenial | * |
| Libgd2 | Ubuntu | zesty | * |
Potential Mitigations
References
- http://www.debian.org/security/2017/dsa-3961
- https://github.com/libgd/libgd/issues/381
- https://github.com/libgd/libgd/releases/tag/gd-2.2.5
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N2BLXX7KNRE7ZVQAKGTHHWS33CUCXVUP/
- http://www.debian.org/security/2017/dsa-3961
- https://github.com/libgd/libgd/issues/381
- https://github.com/libgd/libgd/releases/tag/gd-2.2.5
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N2BLXX7KNRE7ZVQAKGTHHWS33CUCXVUP/