VDB
RHSA-2020%3A4383
RHSA-2020%3A4383
PUBLISHED
CVSS 4.800000190734863 MEDIUM
An integer overflow was found in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. As per upstream: * No EC algorithms are affected. * 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
Risk Scores
CVSS 3.1
4.800000190734863
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | Text-Only JBCS |
Timeline
- Oct 28, 2020 CVE Published
- May 1, 2026 Distribution Patch
- May 1, 2026 Distribution Patch
- May 1, 2026 Security Advisory
- May 1, 2026 Security Advisory
- May 1, 2026 Security Advisory
- May 1, 2026 Security Advisory
- May 1, 2026 Security Advisory
- May 14, 2026 CVE Updated
References
- https://access.redhat.com/errata/RHSA-2020:4383 advisory
- https://access.redhat.com/security/updates/classification/#moderate advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1710609 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=1780995 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=1866563 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=1866564 issue
- https://security.access.redhat.com/data/csaf/v2/advisories/2020/rhsa-2020_4383.json advisory
- https://access.redhat.com/security/cve/CVE-2019-1551 advisory
- https://www.cve.org/CVERecord?id=CVE-2019-1551 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-1551 advisory
- https://github.com/openssl/openssl/pull/10575 advisory
- https://www.openssl.org/news/secadv/20191206.txt advisory
- https://access.redhat.com/security/cve/CVE-2019-5435 advisory
- https://www.cve.org/CVERecord?id=CVE-2019-5435 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-5435 advisory
- https://access.redhat.com/security/cve/CVE-2020-11984 advisory
- https://www.cve.org/CVERecord?id=CVE-2020-11984 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2020-11984 advisory
- https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11984 advisory
- https://access.redhat.com/security/cve/CVE-2020-11993 advisory
…and 3 more