CVE-2023-23558: In Eternal Terminal 6.2.1, TelemetryService uses fixed paths in /tmp

Routine

MEDIUM 6.3DOWNGRADE

CVE-2023-23558 is a medium-severity flaw (CVSS 6.3) affecting eternal terminal. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Eternal Terminal 6.2.1, TelemetryService uses fixed paths in /tmp. For example, a local attacker can create /tmp/.sentry-native-etserver with mode 0777 before the etserver process is started. The attacker can choose to read sensitive information from that file, or modify the information in that file.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Local
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-59
Published	2023-02-16
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: eternal terminal project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-02-16 16:15 UTCPublished CVE record published
2026-06-17 05:37 UTCUpdated Record last modified

eternal terminal project eternal terminal DOWNGRADE

Affected: 6.2.1

Fixed in: no fixed release known

Safe to downgrade to: a release before 6.2.1

1. Check installed version

apt-cache policy eternal-terminal || rpm -q eternal-terminal || eternal-terminal --version

2. No fixed release: DOWNGRADE to a release before 6.2.1 (Debian / Ubuntu)

apt-cache madison eternal-terminal sudo apt install eternal-terminal=<VERSION_BEFORE_6.2.1> sudo apt-mark hold eternal-terminal

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list eternal-terminal sudo dnf downgrade eternal-terminal-<VERSION_BEFORE_6.2.1> sudo dnf versionlock add eternal-terminal

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-23558?

eternal terminal: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-23558 being exploited?

CVE-2023-23558 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-23558 affect?

CVE-2023-23558 affects eternal terminal. Severity is medium (CVSS 6.3). In Eternal Terminal 6.2.1, TelemetryService uses fixed paths in /tmp. For example, a local attacker can create /tmp/.sentry-native-etserver with mode 0777 before the etserver process is started. The attacker can choose to read sensitive inf

How urgent is CVE-2023-23558?

Priority 33/100. Public exploit reference

Related CVEs

CVE-2022-48258 MEDIUM 5.3 DOWNGRADE In Eternal Terminal 6.2.1, etserver and etclient have world-readable logfiles.
CVE-2022-48257 MEDIUM 5.3 DOWNGRADE In Eternal Terminal 6.2.1, etserver and etclient have predictable logfile names in /tmp.
CVE-2022-24952 MEDIUM 6.5 UPGRADE Several denial of service vulnerabilities exist in Eternal Terminal prior to version 6.2.0, including a DoS tr
CVE-2022-24951 HIGH 7.0 UPGRADE A race condition exists in Eternal Terminal prior to version 6.2.0 which allows a local attacker to hijack Ete
CVE-2022-24950 HIGH 7.5 UPGRADE A race condition exists in Eternal Terminal prior to version 6.2.0 that allows an authenticated attacker to hi

References

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