PYSEC-2020-29

Description

A buffer overflow exists in the Brotli library versions prior to 1.0.8 where an attacker controlling the input length of a "one-shot" decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB. It is recommended to update your Brotli library to 1.0.8 or later. If one cannot update, we recommend to use the "streaming" API as opposed to the "one-shot" API, and impose chunk size limits.

Affected packages

References

• https://github.com/google/brotli/releases/tag/v1.0.9 WEB
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00108.html WEB
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MMBKACMLSRX7JJSKBTR35UOEP2WFR6QP/ WEB
• https://usn.ubuntu.com/4568-1/ WEB
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WW62OZEY2GHJL4JCOLJRBSRETXDHMWRK/ WEB
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M4VCDOJGL6BK3HB4XRD2WETBPYX2ITF6/ WEB
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/J4E265WKWKYMK2RYYSIXBEGZTDY5IQE6/ WEB
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W23CUADGMVMQQNFKHPHXVP7RPZJZNN6I/ WEB
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/356JOYTWW4BWSZ42SEFLV7NYHL3S3AEH/ WEB
• https://lists.debian.org/debian-lts-announce/2020/12/msg00003.html WEB
• https://www.debian.org/security/2020/dsa-4801 ADVISORY
• https://github.com/advisories/GHSA-5v8v-66v8-mwm7 ADVISORY

Sources