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CVE-2021-22948

HIGHCVSS 7.1/10EPSS 2.63%

Last modified

CVE-2021-22948 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. Vulnerability in the generation of session IDs in revive-adserver < 5.3.0, based on the cryptographically insecure uniqid() PHP function. Under some circumstances, an attacker could theoretically be able to brute force session IDs in order to take over a specific account.. EPSS estimates a 2.63% chance of exploitation in the next 30 days.

Description

Vulnerability in the generation of session IDs in revive-adserver < 5.3.0, based on the cryptographically insecure uniqid() PHP function. Under some circumstances, an attacker could theoretically be able to brute force session IDs in order to take over a specific account.

Metrics

CVSS 3.1
7.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

EPSS Probability
2.63%

83.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
Revive-AdserverRevive Adserver< 5.3.0—
Revive-AdserverRevive Adserver5.3.0Rc1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-22948?
Vulnerability in the generation of session IDs in revive-adserver < 5.3.0, based on the cryptographically insecure uniqid() PHP function. Under some circumstances, an attacker could theoretically be able to brute force session IDs in order to take over a specific account.
How severe is CVE-2021-22948?
CVE-2021-22948 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 2.63% probability of exploitation in the next 30 days.
How do I fix CVE-2021-22948?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-22948?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST