Home/CVE/A vulnerability in unit_deserialize of systemd allows an attacker to supply arbitrary state across systemd re-execution
CVE

CVE-2018-15686

A vulnerability in unit_deserialize of systemd allows an attacker to supply arbitrary state across systemd re-execution

A vulnerability in unit_deserialize of systemd allows an attacker to supply arbitrary state across systemd re-execution via NotifyAccess. This can be used to improperly influence systemd execution and possibly lead to root privilege escalation. Affected releases are systemd versions up to and including 239.

HIGH · CVSS 7.8 EPSS 0.01533
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-502Deserialization of Untrusted Data
CWE-502Deserialization of Untrusted Data
▤

Affected Products & Versions

4
canonical ubuntu linuxall versions
debian linuxall versions
systemd project systemd<= 239
oracle communications cloud native core network function cloud native environmentall versions
⚠

Public Exploits & PoCs

2
dossystemd - 'reexec' State Injectionverified
pocwww.exploit-db.com · 45714www.exploit-db.com
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumSystemd Service Creation
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · security@ubuntu.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD26 Oct 2018 · 02:29 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

14
suse-csafopenSUSE-SU-2024:11420-1
msrcCVE-2018-15686
rhsaRHBA-2020:0547Important
suse-csafSUSE-SU-2019:0054-2
rhsaRHSA-2019:3222Moderate
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://www.securityfocus.com/bid/105747Third Party AdvisoryVDB Entry
https://github.com/systemd/systemd/pull/10519PatchThird Party Advisory
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
https://lists.debian.org/debian-lts-announce/2018/11/msg00017.htmlMailing ListThird Party Advisory
https://security.gentoo.org/glsa/201810-10Third Party Advisory
https://usn.ubuntu.com/3816-1/Third Party Advisory
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