Is CVE-2019-1551 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 14%.

What products does CVE-2019-1551 affect?

Tracked products affected include PeopleSoft Enterprise PeopleTools. Check the version you run to see whether it is affected.

How do I fix CVE-2019-1551?

Apply the vendor fix in your normal patch cycle. Upgrade affected products to a fixed version.

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CVE-2019-1551

Q: What is CVE-2019-1551?

CVE-2019-1551 is a medium-severity software vulnerability (Integer overflow) with a CVSS score of 5.3. There is an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result

MEDIUM severity · CVSS 5.3 · Integer overflow

5.3CVSS MEDIUM

Summary

There is an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH512 are considered just feasible. However, for an attack the target would have to re-use the DH512 private key, which is not recommended anyway. Also applications directly using the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME. Fixed in OpenSSL 1.1.1e (Affected 1.1.1-1.1.1d). Fixed in OpenSSL 1.0.2u (Affected 1.0.2-1.0.2t).

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactLow

Integrity impactNone

Availability impactNone

Exploit probability (EPSS)14%

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

Affected products we track (1)

PeopleSoft Enterprise PeopleTools

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

CVE-2019-1551

Summary

Impact & exploitability

Affected products we track (1)

Recommendation

Additional information