CVE-2023-36327: Integer Overflow vulnerability in RELIC before commit 421f2e91cf2ba42473d4d54daf24e295679e290e, allows attacke

Q: How do I fix CVE-2023-36327?

relic: upgrade to 2022-11-14. Exact commands for each OS are on this page.

Q: Is CVE-2023-36327 being exploited?

CVE-2023-36327 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2023-36327 affect?

CVE-2023-36327 affects relic. Severity is critical (CVSS 9.8). Integer Overflow vulnerability in RELIC before commit 421f2e91cf2ba42473d4d54daf24e295679e290e, allows attackers to execute arbitrary code and cause a denial of service in pos argument in bn_get_prime function.

Q: How urgent is CVE-2023-36327?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2023-36327 is a critical-severity flaw (CVSS 9.8) affecting relic. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Integer Overflow vulnerability in RELIC before commit 421f2e91cf2ba42473d4d54daf24e295679e290e, allows attackers to execute arbitrary code and cause a denial of service in pos argument in bn_get_prime function.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 42%)
CISA exploited list	No
Weakness	CWE-190
Published	2023-09-01
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: relic project

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

Am I affected?

Timeline

2023-09-01 16:15 UTCPublished CVE record published
2026-06-17 06:06 UTCUpdated Record last modified

relic project relic UPGRADE

Affected: < 2022-11-14

Fixed in: 2022-11-14

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy relic || rpm -q relic || relic --version

2. UPGRADE to 2022-11-14 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade relic

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade relic

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2023-36327?

relic: upgrade to 2022-11-14. Exact commands for each OS are on this page.

Is CVE-2023-36327 being exploited?

CVE-2023-36327 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-2023-36327 affect?

CVE-2023-36327 affects relic. Severity is critical (CVSS 9.8). Integer Overflow vulnerability in RELIC before commit 421f2e91cf2ba42473d4d54daf24e295679e290e, allows attackers to execute arbitrary code and cause a denial of service in pos argument in bn_get_prime function.

How urgent is CVE-2023-36327?

Priority 54/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2023-51939 HIGH 8.8 DOWNGRADE An issue in the cp_bbs_sig function in relic/src/cp/relic_cp_bbs.c of Relic relic-toolkit 0.6.0 allows a remot
CVE-2023-36326 CRITICAL 9.8 UPGRADE Integer Overflow vulnerability in RELIC before commit 34580d840469361ba9b5f001361cad659687b9ab, allows attacke

References

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