CVE-2018-1079 [High] | Path Traversal in Pacemaker Command Line In…

pcs before version 0.9.164 and 0.10 is vulnerable to a privilege escalation via authorized user malicious REST call. The REST interface of the pcsd service did not properly sanitize the file name from the /remote/put_file query. If the /etc/booth directory exists, an authenticated attacker with write permissions could create or overwrite arbitrary files with arbitrary data outside of the /etc/booth directory, in the context of the pcsd process.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2025-03-30	0.62%	0.41%	-0.22%
2	2025-03-29	0.41%	0.62%	+0.22%
3	2025-03-17	—	0.41%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2025-03-30

0.62%

0.41%

-0.22%

2025-03-29

0.41%

0.62%

+0.22%

2025-03-17

—

0.41%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
8.7	3.0	HIGH	`CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/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:H) They need powerful rights—admin, root, or similar—before this pays off. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. 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:H) Could take the service down hard or make it unusable for people who depend on it.	2.3	5.8	[email protected]
6.5	3.0	MEDIUM	`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/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:L) A normal user session is enough; they don’t have to be admin. 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: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]
4.0	2.0	MEDIUM	`AV:N/AC:L/Au:S/C:N/I:P/A:N` 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:S) A single authentication is required. Confidentiality impact (C:N) No confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:N) No availability impact.	8.0	2.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

8.7

3.0

HIGH

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:N/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:H): They need powerful rights—admin, root, or similar—before this pays off.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:C): Breaking this can reach past the original component and bite other resources—bigger blast radius.
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:H): Could take the service down hard or make it unusable for people who depend on it.

2.3

5.8

[email protected]

6.5

3.0

MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/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:L): A normal user session is enough; they don’t have to be admin.
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: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]

4.0

2.0

MEDIUM

AV:N/AC:L/Au:S/C:N/I:P/A:N 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:S): A single authentication is required.
Confidentiality impact (C:N): No confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:N): No availability impact.

8.0

2.9

[email protected]

OS Trackers for CVE-2018-1079

vendor	priority	summary	link
`debian`	not yet assigned	CVE-2018-1079 not yet assigned priority: Debian including 1 source packages (pcs), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2018-1079
`redhat`	high	—	https://access.redhat.com/security/cve/CVE-2018-1079
`ubuntu`	medium	CVE-2018-1079 medium priority: Ubuntu including 1 source packages (pcs), 8 status rows across 8 suites (artful, bionic, cosmic, disco, eoan, trusty, upstream, xenial): not-affected 4, ignored 2, DNE 1, released 1.	https://ubuntu.com/security/CVE-2018-1079

Affected software / configurations for CVE-2018-1079

Vendor	Product	Version	Raw CPE
clusterlabs	pacemaker_command_line_interface	<= 0.9.164	cpe:2.3:a:clusterlabs:pacemaker_command_line_interface::::::::
clusterlabs	pacemaker_command_line_interface	0.10	cpe:2.3:a:clusterlabs:pacemaker_command_line_interface:0.10:::::::*
redhat	enterprise_linux	7.0	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
redhat	enterprise_linux	7.5	cpe:2.3:o:redhat:enterprise_linux:7.5:::::::*

References for CVE-2018-1079

URL	Tags
https://access.redhat.com/errata/RHSA-2018:1060	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1079	Issue Tracking Third Party Advisory

URL

CVE-2018-1079

Exploit prediction scoring system (EPSS) score for CVE-2018-1079

Common vulnerability scoring system (CVSS) metrics for CVE-2018-1079

Weakness enumeration for CVE-2018-1079

OS Trackers for CVE-2018-1079

Affected software / configurations for CVE-2018-1079

References for CVE-2018-1079