CVE-2019-15679: kaspersky tightvnc Heap-based Buffer Overflow
CVSS: 9.8v3.1CriticalModified
AliasesUBUNTU-CVE-2019-15679DEBIAN-CVE-2019-15679
Published 29-10-2019Last modified 05-08-2024
Vulnerability summary
CVE-2019-15679 is a critical (CVSS 9.8) Heap-based Buffer Overflow vulnerability in kaspersky tightvnc. EPSS estimates a 11.84% chance of exploitation in the next 30 days, higher than 96% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
11.84%
0%100%
Medium · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 2 · Duplicates 1 · Related 1Timeline
- 29-10-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
TightVNC code version 1.3.10 contains heap buffer overflow in InitialiseRFBConnection function, which can potentially result code execution. This attack appear to be exploitable via network connectivity.
CVSS metrics
4 scores · 3 sources · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
11.84%
Chance of exploitation in the next 30 days
Percentile
96%
Versus all other CVEs
30-day change
0.00 pp
From 11.84% on 18-09-2026
18-09-202618-10-2026
EPSS score11.84%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Ubuntu6 products
- ssvncAll versions (No fix recorded)
- tightvnc< 1.3.9-6.5+deb8u1build0.14.04.1~esm1 | All versions (No fix recorded)
- veyonAll versions (No fix recorded)
- vncsnapshotAll versions (No fix recorded)
- x11vncAll versions (No fix recorded)
Debian1 product
- tightvnc< 1:1.3.9-9.1
Kaspersky1 product
- tightvnc1.3.10
Tightvnc1 product
- tightvnc1.3.10
4 vendors · 9 products
References
7 links- www.openwall.com/lists/oss-security/2018/12/10/5Mailing ListX Refsource MLISTThird Party AdvisoryREPORT
- cert-portal.siemens.com/productcert/pdf/ssa-478893.pdfX Refsource CONFIRM
us-cert.cisa.gov/ics/advisories/icsa-20-343-08X Refsource MISC