HIGH
libvncserver: unaligned accesses in hybiReadAndDecode can lead to a crash
Published Jun 17, 2020
7.5
HIGHCVSS 3.1
EPSS 2.61%
Description
An issue was discovered in LibVNCServer before 0.9.13. libvncserver/ws_decode.c can lead to a crash because of unaligned accesses in hybiReadAndDecode.
Affected products
No data.
Configuration 1
- ≤ 0.9.12
Configuration 2
OR
- 14.04
- 16.04
- 16.04
- 18.04
- 18.10
- 20.04
Configuration 3
OR
- 8.0
- 9.0
Configuration 4
AND
- ≥ 3.0.0.0 · < 3.2.1.0
Running on/with
- n/a
Configuration 5
AND
- ≥ 3.0.0.0 · < 3.2.1.0
Running on/with
- n/a
Configuration 6
AND
- ≥ 3.0.0.0 · < 3.2.1.0
Running on/with
- n/a
Configuration 7
AND
- ≥ 3.0.0.0 · < 3.2.1.0
Running on/with
- n/a
Configuration 8
AND
- ≥ 3.0.0.0 · < 3.2.1.0
Running on/with
- n/a
Configuration 9
AND
- ≥ 3.0.0.0 · < 3.2.1.0
Running on/with
- n/a
No data.
Red Hat Enterprise Linux 6
libvncserver
Not affected
Red Hat Enterprise Linux 7
libvncserver
Not affected
Red Hat Enterprise Linux 8
libvncserver
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | libvncserver | Not affected | n/a |
| Red Hat Enterprise Linux 7 | libvncserver | Not affected | n/a |
| Red Hat Enterprise Linux 8 | libvncserver | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Weaknesses (2)
References (12)
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2019-20840 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1849881 Issue Tracking
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf x_refsource_CONFIRMPatchThird Party Advisory
- https://github.com/LibVNC/libvncserver/commit/0cf1400c61850065de590d403f6d49e32882fd76 x_refsource_MISCPatchThird Party Advisory
- https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13 x_refsource_MISCRelease NotesThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4F6FUH4EFK4NAP6GT4TQRTBKWIRCZLIY/ vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2019-20840
- https://usn.ubuntu.com/4434-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2019-20840
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jun 17, 2020
Updated Aug 5, 2024
Reserved Jun 17, 2020
Link CVE-2019-20840
CISA Vulnrichment
Updated n/a