CVE-2018-15686

systemd: reexec state injection: fgets() on overlong lines leads to line splitting

CVSS 7 HIGHEPSS 2.3%CWE-502

Vexday Risk Score

41Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 7EPSS 2.3%KEV nãoPoC públicaNuclei —Metasploit —Patch referenciado

Lifecycle

26 Oct 2018Published on NVD

29 Oct 2018Public PoC

Recommendation: Plan a near-term fix — a public PoC already exists.

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.

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

systemd · systemd

public PoCs found — 3

githubgithub.com/hpcprofessional/remediate_cesa_2019_2091★ 0 cve_referencewww.exploit-db.com/exploits/45714/unverified exploitdbwww.exploit-db.com/exploits/45714unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References

https://access.redhat.com/errata/RHSA-2019:2091 https://access.redhat.com/errata/RHSA-2019:3222 https://access.redhat.com/errata/RHSA-2020:0593 https://github.com/systemd/systemd/pull/10519 https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E https://lists.debian.org/debian-lts-announce/2018/11/msg00017.html https://security.gentoo.org/glsa/201810-10 https://usn.ubuntu.com/3816-1/https://www.exploit-db.com/exploits/45714/https://www.oracle.com//security-alerts/cpujul2021.html http://www.securityfocus.com/bid/105747