VulnerabilityModified
CVE-2018-20748
LibVNC before 0.9.12 contains multiple heap out-of-bounds write vulnerabilities in libvncclient/rfbproto.c.
CRITICAL 9.8EPSS 3.26%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
LibVNC before 0.9.12 contains multiple heap out-of-bounds write vulnerabilities in libvncclient/rfbproto.c. The fix for CVE-2018-20019 was incomplete.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 3.26% probability · 88th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- libvnc project/libvncserver · debian/debian linux · canonical/ubuntu linux · siemens/simatic itc1500 firmware · siemens/simatic itc1500 pro firmware · siemens/simatic itc1900 firmware · siemens/simatic itc1900 pro firmware · siemens/simatic itc2200 firmware · siemens/simatic itc2200 pro firmware
- Source
- cve@mitre.org
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfPatch, Third Party Advisory
- https://github.com/LibVNC/libvncserver/commit/a64c3b37af9a6c8f8009d7516874b8d266b42baePatch, Third Party Advisory
- https://github.com/LibVNC/libvncserver/commit/c2c4b81e6cb3b485fb1ec7ba9e7defeb889f6ba7Patch, Third Party Advisory
- https://github.com/LibVNC/libvncserver/commit/c5ba3fee85a7ecbbca1df5ffd46d32b92757bc2aPatch, Third Party Advisory
- https://github.com/LibVNC/libvncserver/commit/e34bcbb759ca5bef85809967a268fdf214c1ad2cPatch, Third Party Advisory
- https://github.com/LibVNC/libvncserver/issues/273Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/01/msg00029.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/3877-1/Third Party Advisory
- https://usn.ubuntu.com/4547-1/Third Party Advisory
- https://usn.ubuntu.com/4587-1/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2018/12/10/8Exploit, Mailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdfPatch, Third Party Advisory
- https://github.com/LibVNC/libvncserver/commit/a64c3b37af9a6c8f8009d7516874b8d266b42baePatch, Third Party Advisory
- https://github.com/LibVNC/libvncserver/commit/c2c4b81e6cb3b485fb1ec7ba9e7defeb889f6ba7Patch, Third Party Advisory
- https://github.com/LibVNC/libvncserver/commit/c5ba3fee85a7ecbbca1df5ffd46d32b92757bc2aPatch, Third Party Advisory
- https://github.com/LibVNC/libvncserver/commit/e34bcbb759ca5bef85809967a268fdf214c1ad2cPatch, Third Party Advisory
- https://github.com/LibVNC/libvncserver/issues/273Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/01/msg00029.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/3877-1/Third Party Advisory
- https://usn.ubuntu.com/4547-1/Third Party Advisory
- https://usn.ubuntu.com/4587-1/Third Party Advisory
- https://www.openwall.com/lists/oss-security/2018/12/10/8Exploit, Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.