[USN-7198-1] rlottie vulnerabilities

[Nico Campuzano]

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Ubuntu Security Notice USN-7198-1
January 10, 2025

rlottie vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in rlottie.

Software Description:
- rlottie: library for rendering vector based animations and art

Details:

Paolo Giai discovered a series of stack-based overflow vulnerabilities in
the blit and gray_render_cubic functions of a custom fork of the rlottie
library. An attacker could possibly use this issue to leak sensitive
information. This issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04
LTS. (CVE-2021-31315, CVE-2021-31321)

Paolo Giai discovered a series of type confusion vulnerabilities in the
VDasher constructor and the LOTCompLayerItem::LOTCompLayerItem function
of a custom fork of the rlottie library. An attacker could possibly use
this issue to leak sensitive information. This issue only affected Ubuntu
20.04 LTS. (CVE-2021-31317, CVE-2021-31318)

Paolo Giai discovered an integer overflow vulnerability in the
LOTGradient::populate function of a custom fork of the rlottie library.
An attacker could possibly use this issue to leak sensitive information.
This issue only affected Ubuntu 20.04 LTS. (CVE-2021-31319)

Paolo Giai discovered a series of heap buffer overflow vulnerabilities
in the VGradientCache::generateGradientColorTable and
LOTGradient::populate functions of a custom fork of the rlottie library.

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