CVE-2017-5375

Exp

JIT code allocation can allow for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.

Published: 2018-06-11 Last update: 2025-11-25 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-5375 is rated High Exploit Risk (86.2/100): CVSS Critical severity, with high exploitation likelihood (EPSS 58.39%, 98th percentile). 6 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-2017-5375

EDB-ID Source Kind Published Link
44293 exploit_db edb 2018-03-16 Exploit-DB ↗
44294 exploit_db edb 2018-03-16 Exploit-DB ↗
42327 exploit_db edb 2017-07-14 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2017-5375

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 2026-05-27 60.74% 58.39% -2.35%
2 2025-12-26 61.73% 60.74% -0.99%
3 2025-11-21 — 61.73% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-5375

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.0 CRITICAL
CVSS:3.0/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-2017-5375

OS Trackers for CVE-2017-5375

vendor priority summary link
debian not yet assigned CVE-2017-5375 not yet assigned priority: Debian including 2 source packages (firefox, firefox-esr), 6 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 6. https://security-tracker.debian.org/tracker/CVE-2017-5375
gentoo normal CVE-2017-5375: 2 GLSA(s) (201702-13, 201702-22), 4 atom(s) (mail-client/thunderbird, mail-client/thunderbird-bin, www-client/firefox, www-client/firefox-bin); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-5375
redhat critical — https://access.redhat.com/security/cve/CVE-2017-5375
suse high CVE-2017-5375 severity important: SUSE including 101 source package names (MozillaFirefox-102.11.0-150200.152.87.1, MozillaFirefox-115.10.0-150200.152.134.1, …), 151 product×package rows across 52 product lines (SUSE Liberty Linux 7, SUSE Linux Enterprise Desktop 12 SP1, … (52 product lines)): Fixed 151. https://www.suse.com/security/cve/CVE-2017-5375/
ubuntu medium CVE-2017-5375 medium priority: Ubuntu including 2 source packages (firefox, thunderbird), 12 status rows across 6 suites (precise, trusty, upstream, xenial, yakkety, zesty): released 11, needs-triage 1. https://ubuntu.com/security/CVE-2017-5375

Affected software / configurations for CVE-2017-5375

Vendor Product Version Raw CPE
redhat enterprise_linux_desktop 5.0 cpe:2.3:o:redhat:enterprise_linux_desktop:5.0:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 6.0 cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_desktop 7.0 cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 5.0 cpe:2.3:o:redhat:enterprise_linux_server:5.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 6.0 cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_server 7.0 cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 5.0 cpe:2.3:o:redhat:enterprise_linux_workstation:5.0:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 6.0 cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
redhat enterprise_linux_workstation 7.0 cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
mozilla firefox < 45.7.0 cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozilla firefox < 51.0.1 cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
mozilla thunderbird < 45.7.0 cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

References for CVE-2017-5375

URL Tags
http://rhn.redhat.com/errata/RHSA-2017-0190.html Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0238.html Third Party Advisory
http://www.securityfocus.com/bid/95757 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037693 Third Party Advisory VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1325200 Issue Tracking Permissions Required
https://security.gentoo.org/glsa/201702-13 Third Party Advisory
https://security.gentoo.org/glsa/201702-22 Third Party Advisory
https://www.debian.org/security/2017/dsa-3771 Third Party Advisory
https://www.debian.org/security/2017/dsa-3832 Third Party Advisory
https://www.exploit-db.com/exploits/42327/ Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/44293/ Exploit Third Party Advisory VDB Entry
https://www.exploit-db.com/exploits/44294/ Exploit Third Party Advisory VDB Entry
https://www.mozilla.org/security/advisories/mfsa2017-01/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-02/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2017-03/ Vendor Advisory
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