How severe is CVE-2017-1000455?

CVE-2017-1000455 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2017-1000455 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-1000455?

CVE-2017-1000455 affects Gnu Guixsd. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-1000455?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2017-1000455 published?

CVE-2017-1000455 was published on 2018-01-02 and last updated on 2026-06-17.

CVE-2017-1000455

CVE-2017-1000455 is a medium-severity vulnerability in Gnu Guixsd with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-346.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-346
Affected product: Gnu Guixsd
Published: 2018-01-02
Last modified: 2026-06-17

Description

GuixSD prior to Git commit 5e66574a128937e7f2fcf146d146225703ccfd5d used POSIX hard links incorrectly, leading the creation of setuid executables in "the store", violating a fundamental security assumption of GNU Guix.

Frequently asked questions

What is CVE-2017-1000455?: GuixSD prior to Git commit 5e66574a128937e7f2fcf146d146225703ccfd5d used POSIX hard links incorrectly, leading the creation of setuid executables in "the store", violating a fundamental security assumption of GNU Guix.
How severe is CVE-2017-1000455?: CVE-2017-1000455 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2017-1000455 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-1000455?: CVE-2017-1000455 affects Gnu Guixsd. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-1000455?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-1000455 published?: CVE-2017-1000455 was published on 2018-01-02 and last updated on 2026-06-17.

References

https://lists.gnu.org/archive/html/guix-devel/2017-10/msg00090.html

Affected products (1)

cpe:2.3:a:gnu:guixsd:*:*:*:*:*:*:*:*

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