CVE-2022-2787 | stricter rules on chroot names

Schroot before 1.6.13 had too permissive rules on chroot or session names, allowing a denial of service on the schroot service for all users that may start a schroot session.

Published: 2022-08-27 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-2787 is rated Low Risk (35.5/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.79%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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

Exploit prediction scoring system (EPSS) score for CVE-2022-2787

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 0.34% 0.79% +0.44%
2 2026-05-13 0.40% 0.34% -0.06%
3 2025-12-28 — 0.40% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-2787

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
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:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 2.8 1.4 [email protected]

Weakness enumeration for CVE-2022-2787

OS Trackers for CVE-2022-2787

vendor priority summary link
debian not yet assigned CVE-2022-2787 not yet assigned priority: Debian including 1 source packages (schroot), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2022-2787
gentoo low CVE-2022-2787: 1 GLSA(s) (202210-11), 1 atom(s) (dev-util/schroot); latest impact low. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2022-2787
ubuntu medium CVE-2022-2787 medium priority: Ubuntu including 1 source packages (schroot), 7 status rows across 7 suites (bionic, focal, jammy, kinetic, trusty, upstream, xenial): released 5, ignored 1, not-affected 1. https://ubuntu.com/security/CVE-2022-2787

Affected software / configurations for CVE-2022-2787

Vendor Product Version Raw CPE
debian schroot < 1.6.13 cpe:2.3:a:debian:schroot:*:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
debian debian_linux 11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

References for CVE-2022-2787

cvelogic Threat Intelligence