CVE-2019-18823

HTCondor up to and including stable series 8.8.6 and development series 8.9.4 has Incorrect Access Control. It is possible to use a different authentication method to submit a job than the administrator has specified. If the administrator has configured the READ or WRITE methods to include CLAIMTOBE, then it is possible to impersonate another user to the condor_schedd. (For example to submit or remove jobs)

Published: 2020-04-27 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2019-18823 is rated High Risk (67.4/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.82%). High exploitation likelihood—assess exposure and prioritize remediation.

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-2019-18823

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 2025-11-21 4.57% 2.82% -1.75%
2 2025-11-18 2.78% 4.57% +1.79%
3 2025-05-24 — 2.78% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2019-18823

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 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:N)
No account or special rights needed—anonymous or random user is enough.
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.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
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.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2019-18823

OS Trackers for CVE-2019-18823

vendor priority summary link
debian not yet assigned CVE-2019-18823 not yet assigned priority: Debian including 1 source packages (condor), 3 status rows across 3 suites (forky, sid, trixie): resolved 3. https://security-tracker.debian.org/tracker/CVE-2019-18823
ubuntu low CVE-2019-18823 low priority: Ubuntu including 1 source packages (condor), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 7, needs-triage 7, ignored 2. https://ubuntu.com/security/CVE-2019-18823

Affected software / configurations for CVE-2019-18823

Vendor Product Version Raw CPE
wisc htcondor >= 8.8.0, <= 8.8.6 cpe:2.3:a:wisc:htcondor:*:*:*:*:*:*:*:*
wisc htcondor >= 8.9.0, <= 8.9.4 cpe:2.3:a:wisc:htcondor:*:*:*:*:*:*:*:*
fedoraproject fedora 30 cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
fedoraproject fedora 31 cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
fedoraproject fedora 32 cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

References for CVE-2019-18823

URL Tags
https://lists.debian.org/debian-lts-announce/2021/08/msg00000.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3EOTJJOSMYKXIYXWSG3H4KN332EDSEB6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BL5YCZXYS67MLJSHR4OLSWVHBE6PZJSB/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VMPZ7XPOPA4JGAQAUJ4K7JV653DSCIDK/
https://research.cs.wisc.edu/htcondor/ Product
https://research.cs.wisc.edu/htcondor/new.html Release Notes Vendor Advisory
https://research.cs.wisc.edu/htcondor/security/vulnerabilities/HTCONDOR-2020-0001.html Mitigation Vendor Advisory
https://research.cs.wisc.edu/htcondor/security/vulnerabilities/HTCONDOR-2020-0002.html Mitigation Vendor Advisory
https://research.cs.wisc.edu/htcondor/security/vulnerabilities/HTCONDOR-2020-0003.html Mitigation Vendor Advisory
https://research.cs.wisc.edu/htcondor/security/vulnerabilities/HTCONDOR-2020-0004.html Vendor Advisory
https://www.debian.org/security/2022/dsa-5144 Third Party Advisory
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