Bug 1811948 (CVE-2019-15690)
| Summary: | CVE-2019-15690 libvncserver: HandleCursorShape() integer overflow resulting in heap-based buffer overflow | ||
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| Product: | [Other] Security Response | Reporter: | Michael Kaplan <mkaplan> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | gsuckevi, negativo17, ppisar, rdieter, scorneli |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: |
A flaw was found in libvncserver. An integer overflow within the HandleCursorShape() function can be exploited to cause a heap-based buffer overflow by tricking a user or application using libvncserver to connect to an unstrusted server and subsequently send cursor shapes with specially crafted dimensions. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-03-23 10:32:26 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1811950, 1811951, 1814339, 1814340, 1814341, 1814342, 1814343, 1814745 | ||
| Bug Blocks: | 1811953, 1829873 | ||
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Description
Michael Kaplan
2020-03-10 09:53:47 UTC
Created libvncserver tracking bugs for this issue: Affects: epel-7 [bug 1811951] Affects: fedora-all [bug 1811950] Researcher Reference: https://www.openwall.com/lists/oss-security/2019/12/20/2 This issue has been addressed in the following products: Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions Via RHSA-2020:0921 https://access.redhat.com/errata/RHSA-2020:0921 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2020:0913 https://access.redhat.com/errata/RHSA-2020:0913 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2020:0920 https://access.redhat.com/errata/RHSA-2020:0920 This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2019-15690 *** Bug 1829870 has been marked as a duplicate of this bug. *** Mitigation: Libvncserver should not be used to connect to untrusted server. |