CVE-2018-15587

Exp

GNOME Evolution through 3.28.2 is prone to OpenPGP signatures being spoofed for arbitrary messages using a specially crafted email that contains a valid signature from the entity to be impersonated as an attachment.

Published: 2019-02-11 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-15587 is rated High Exploit Risk (67.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.92%). 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-2018-15587

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

Exploit prediction scoring system (EPSS) score for CVE-2018-15587

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 2026-02-17 1.20% 0.92% -0.28%
2 2025-11-21 1.68% 1.20% -0.48%
3 2025-11-18 — 1.68% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-15587

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N 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:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
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:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2018-15587

OS Trackers for CVE-2018-15587

vendor priority summary link
debian not yet assigned CVE-2018-15587 not yet assigned priority: Debian including 1 source packages (evolution), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-15587
redhat medium — https://access.redhat.com/security/cve/CVE-2018-15587
suse medium CVE-2018-15587 severity moderate: SUSE including 87 source package names (atk-2.28.1-2.el7, atk-devel-2.28.1-2.el7, …), 132 product×package rows across 22 product lines (SUSE Liberty Linux 7, SUSE Liberty Linux 7 LTSS, … (22 product lines)): Fixed 125, Known Not Affected 7. https://www.suse.com/security/cve/CVE-2018-15587/
ubuntu medium CVE-2018-15587 medium priority: Ubuntu including 2 source packages (evolution, evolution-data-server), 38 status rows across 19 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): released 31, DNE 2, needed 2, needs-triage 2, ignored 1. https://ubuntu.com/security/CVE-2018-15587

Affected software / configurations for CVE-2018-15587

Vendor Product Version Raw CPE
gnome evolution <= 3.28.2 cpe:2.3:a:gnome:evolution:*:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

References for CVE-2018-15587

URL Tags
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00047.html
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00061.html
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00024.html
http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html Third Party Advisory VDB Entry
http://seclists.org/fulldisclosure/2019/Apr/38 Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2019/04/30/4 Mailing List Third Party Advisory
https://bugzilla.gnome.org/show_bug.cgi?id=796424 Exploit Issue Tracking Vendor Advisory
https://github.com/RUB-NDS/Johnny-You-Are-Fired
https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf
https://lists.debian.org/debian-lts-announce/2019/04/msg00027.html Mailing List Third Party Advisory
https://seclists.org/bugtraq/2019/Jun/7
https://usn.ubuntu.com/3998-1/
https://www.debian.org/security/2019/dsa-4457
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