CVE-2021-3410

Exp

A flaw was found in libcaca v0.99.beta19. A buffer overflow issue in caca_resize function in libcaca/caca/canvas.c may lead to local execution of arbitrary code in the user context.

Published: 2021-02-23 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2021-3410 is rated High Exploit Risk (61.3/100): CVSS High severity, with low exploitation likelihood (EPSS 0.56%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2021-3410

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2021-3410

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.12% 0.56% +0.44%
2 2026-03-18 0.21% 0.12% -0.09%
3 2025-12-28 — 0.21% —

Full EPSS history (19 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2021-3410

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]
4.6 2.0 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 6.4 [email protected]

Weakness enumeration for CVE-2021-3410

OS Trackers for CVE-2021-3410

vendor priority summary link
alpine high CVE-2021-3410: 1 source package rows (libcaca); 7 state rows across 7 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 7, open 0. https://security.alpinelinux.org/vuln/CVE-2021-3410
debian not yet assigned CVE-2021-3410 not yet assigned priority: Debian including 1 source packages (libcaca), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2021-3410
gentoo normal CVE-2021-3410: 1 GLSA(s) (202402-19), 1 atom(s) (media-libs/libcaca); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-3410
suse medium CVE-2021-3410 severity moderate: SUSE including 29 source package names (caca-utils-0.99.beta19.git20171003-150200.11.9.1, caca-utils-0.99.beta19.git20171003-8.3, …), 99 product×package rows across 31 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (31 product lines)): Fixed 97, Known Not Affected 2. https://www.suse.com/security/cve/CVE-2021-3410/
ubuntu medium CVE-2021-3410 medium priority: Ubuntu including 1 source packages (libcaca), 7 status rows across 7 suites (bionic, focal, groovy, hirsute, trusty, upstream, xenial): released 7. https://ubuntu.com/security/CVE-2021-3410

Affected software / configurations for CVE-2021-3410

Vendor Product Version Raw CPE
libcaca_project libcaca 0.99 cpe:2.3:a:libcaca_project:libcaca:0.99:beta19:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
fedoraproject fedora 34 cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
fedoraproject fedora 35 cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

References for CVE-2021-3410

cvelogic Threat Intelligence