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TI-2019-01191 Aliases CVE-2019-1563GHSA-rv3r-f48w-6vvh

Padding Oracle in PKCS7_dataDecode and CMS_decrypt_set1_pkey

Priority LOW 30CWE-203Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Partial Red Hat: 4 fixed, 8 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-203.

Summary

In situations where an attacker receives automated notification of the success or failure of a decryption attempt an attacker, after sending a very large number of messages to be decrypted, can recover a CMS/PKCS7 transported encryption key or decrypt any RSA encrypted message that was encrypted with the public RSA key, using a Bleichenbacher padding oracle attack. Applications are not affected if they use a certificate together with the private RSA key to the CMS_decrypt or PKCS7_decrypt functions to select the correct recipient info to decrypt. Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c). Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k). Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.03838 90th percentileScored 2026-11-07
Fix Partial Red Hat: 3 advisoriesRed Hat: 4 fixed, 8 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenSSLOpenSSLFixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c); Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k); Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s)—No fix listedCNA
  • OpenSSL VendorOpenSSL Affected Fixed in OpenSSL 1.1.1d (Affected 1.1.1-1.1.1c); Fixed in OpenSSL 1.1.0l (Affected 1.1.0-1.1.0k); Fixed in OpenSSL 1.0.2t (Affected 1.0.2-1.0.2s) Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*1.0.2 – 1.0.2s; 1.1.0 – 1.1.0k; 1.1.1 – 1.1.1cVulnerableOpenSSL
  • cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* Versions 1.0.2 – 1.0.2s; 1.1.0 – 1.1.0k; 1.1.1 – 1.1.1c Vulnerable ·OpenSSL

Remediation

Red Hat 3 advisories

  • RHSA-2020:1840 Released 2020-04-28 · Red Hat rating Moderate
    openssl security and bug fix update
    • Red Hat Enterprise Linux BaseOS (v. 8) openssl-1:1.1.1c-15.el8, openssl-devel-1:1.1.1c-15.el8, openssl-libs-1:1.1.1c-15.el8 +1
  • RHSA-2020:1337 Released 2020-04-06 · Red Hat rating Moderate
    Red Hat JBoss Core Services Apache HTTP Server 2.4.37 SP2 security update
    • Red Hat JBoss Core Services on RHEL 6 Server jbcs-httpd24-apr-1.6.3-86.jbcs.el6, jbcs-httpd24-apr-devel-1.6.3-86.jbcs.el6, jbcs-httpd24-brotli-1.0.6-21.jbcs.el6 +17
    • Red Hat JBoss Core Services on RHEL 7 Server jbcs-httpd24-apr-1.6.3-86.jbcs.el7, jbcs-httpd24-apr-devel-1.6.3-86.jbcs.el7, jbcs-httpd24-brotli-1.0.6-21.jbcs.el7 +17
  • RHSA-2020:1336 Released 2020-04-06 · Red Hat rating Moderate
    Red Hat JBoss Core Services Apache HTTP Server 2.4.37 SP2 security update
    • JBoss Core Services Apache HTTP Server 2.4.37 SP2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Show 8 more groups

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux 8AffectedNo fix yet: Fix deferred
Red Hat JBoss Enterprise Application Platform 5AffectedNo fix planned: Out of support scope
Red Hat JBoss Enterprise Application Platform 6AffectedNo fix planned: Out of support scope
Red Hat JBoss Enterprise Web Server 2AffectedNo fix planned: Out of support scope
Red Hat JBoss Web Server 3AffectedNo fix planned: Out of support scope
JBoss Core Services Apache HTTP Server 2.4.37 SP2Fixed RHSA-2020:1336
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2020:1840
Red Hat JBoss Core Services on RHEL 6 ServerFixed RHSA-2020:1337
Red Hat JBoss Core Services on RHEL 7 ServerFixed RHSA-2020:1337
Not affected: 1 product
  • Red Hat JBoss Web Server 5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-1563
  2. 2026-10-03 Alias added: GHSA-rv3r-f48w-6vvh
  3. 2026-10-08 CISA SSVC decision points changed
  4. 2026-10-20 EPSS moved to the 90th–95th percentile

References

Advisory 13

Other 17

  • TI-2022-01915 The c_rehash script allows command injection CVSS 3.1CRITICAL 9.8
  • TI-2021-02645 SM2 Decryption Buffer Overflow CVSS 3.1CRITICAL 9.8
  • TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
  • TI-2022-01176 The c_rehash script allows command injection CVSS 3.1CRITICAL 9.8
  • TI-2014-00154 The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly… KEVCVSS 3.1HIGH 7.5
  • TI-2025-14107 Stack buffer overflow in CMS (Auth)EnvelopedData parsing CVSS 3.1HIGH 8.8
See all 312 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences