CVE catalog
CVE-2021-31321
rlottie: CVE-2021-31321
- Severity
- Medium
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.10% · Oct 25, 2026
Telegram Android <7.1.0 (2090), Telegram iOS <7.1, and Telegram macOS <7.1 are affected by a Stack Based Overflow in the gray_split_cubic function of their custom fork of the rlottie library. A remote attacker might be able to overwrite Telegram's stack memory out-of-bounds on a victim device via a malicious animated sticker.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | rlottie | sid | 0.1+dfsg-5 | fixed |
| Debian | rlottie | forky | 0.1+dfsg-5 | fixed |
| Debian | rlottie | trixie | 0.1+dfsg-4.2+deb13u2 | fixed |
| Debian | rlottie | bookworm | 0.1+dfsg-4+deb12u2 | fixed |
| Ubuntu | rlottie | pro | 0~git20190721.24346d0+dfsg-2 | vulnerable |
| Ubuntu | rlottie | pro | 0~git20190721.24346d0+dfsg-2build1 | vulnerable |
| Ubuntu | rlottie | pro | 0~git20200305.a717479+dfsg-1 | vulnerable |
| Ubuntu | rlottie | pro | 0~git20200305.a717479+dfsg-1ubuntu0.1~esm1 | fixed |
| Ubuntu | rlottie | 22.04 | 0.1+dfsg-2 | vulnerable |
| Ubuntu | rlottie | 22.04 | 0.1+dfsg-2ubuntu0.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | rlottie | source | sid | 0.1+dfsg-2 | not yet assigned | Not reported | [988885] |
| Debian | rlottie | source | forky | 0.1+dfsg-2 | not yet assigned | Not reported | [988885] |
| Debian | rlottie | source | trixie | 0.1+dfsg-2 | not yet assigned | Not reported | [988885] |
| Debian | rlottie | source | bookworm | 0.1+dfsg-2 | not yet assigned | Not reported | [988885] |
| Ubuntu | rlottie | deb | pro | 0~git20200305.a717479+dfsg-1ubuntu0.1~esm1 | Not reported | UBUNTU-CVE-2021-31321 | Not reported |
| Ubuntu | rlottie | deb | 22.04 | 0.1+dfsg-2ubuntu0.1 | Not reported | UBUNTU-CVE-2021-31321 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [librlottie0-1]Fixed
Source package: [rlottie]
Details (2)
0.1+dfsg-4+deb12u2· amd64 · bookwormFixed · Fixed:
0.1+dfsg-2dsa · rlottie · debian · bookworm; dsa · rlottie · debian · 12
0.1+dfsg-4+deb12u2· arm64 · bookwormFixed · Fixed:
0.1+dfsg-2dsa · rlottie · debian · bookworm; dsa · rlottie · debian · 12
- [librlottie-dev]Fixed
Source package: [rlottie]
Details (2)
0.1+dfsg-4+deb12u2· amd64 · bookwormFixed · Fixed:
0.1+dfsg-2dsa · rlottie · debian · bookworm; dsa · rlottie · debian · 12
0.1+dfsg-4+deb12u2· arm64 · bookwormFixed · Fixed:
0.1+dfsg-2dsa · rlottie · debian · bookworm; dsa · rlottie · debian · 12
[Debian 13 (Trixie)]
- [librlottie0-1]Fixed
Source package: [rlottie]
Details (2)
0.1+dfsg-4.2+deb13u2· amd64 · trixieFixed · Fixed:
0.1+dfsg-2dsa · rlottie · debian · 13
0.1+dfsg-4.2+deb13u2· arm64 · trixieFixed · Fixed:
0.1+dfsg-2dsa · rlottie · debian · 13
- [librlottie-dev]Fixed
Source package: [rlottie]
Details (2)
0.1+dfsg-4.2+deb13u2· amd64 · trixieFixed · Fixed:
0.1+dfsg-2dsa · rlottie · debian · 13
0.1+dfsg-4.2+deb13u2· arm64 · trixieFixed · Fixed:
0.1+dfsg-2dsa · rlottie · debian · 13
Observed: