The ff_put_pixels8_xy2_mmx function in rnd_template.c in Libav 11.7 allows remote attackers to cause a denial of service (invalid memory access and crash) via a crafted mp3 file. NOTE: this issue was originally reported as involving a NULL pointer dereference.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libav | Libav | 11.7 (including) | 11.7 (including) |
| Libav | Ubuntu | esm-infra-legacy/trusty | * |
| Libav | Ubuntu | precise | * |
| Libav | Ubuntu | trusty | * |
| Libav | Ubuntu | trusty/esm | * |
Potential Mitigations
References
- http://www.openwall.com/lists/oss-security/2016/09/21/6
- http://www.securityfocus.com/bid/93042
- https://blogs.gentoo.org/ago/2016/09/20/libav-null-pointer-dereference-in-ff_put_pixels8_xy2_mmx-rnd_template-c/
- http://www.openwall.com/lists/oss-security/2016/09/21/6
- http://www.securityfocus.com/bid/93042
- https://blogs.gentoo.org/ago/2016/09/20/libav-null-pointer-dereference-in-ff_put_pixels8_xy2_mmx-rnd_template-c/