Buffer overflow in Qemu
CVE-2019-6778
In QEMU 3.0.0, tcp_emu in slirp/tcp_subr.c has a heap-based buffer overflow.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (47.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Qemu — versions 3.0.0
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Fedoraproject Fedora — versions 29, 30
- openSUSE Leap — versions 15.0, 42.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/106758 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.opensuse.org/opensuse-security-announce/2019-02/msg00073.html (vendor-advisory, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2019/01/24/5 (Patch, Mailing List, Third Party Advisory)
- lists.gnu.org/archive/html/qemu-devel/2019-01/msg03132.html (Patch, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- usn.ubuntu.com/3923-1/ (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html (vendor-advisory)
- www.debian.org/security/2019/dsa-4454 (vendor-advisory)
Frequently asked questions
- What is CVE-2019-6778?
- CVE-2019-6778 is a high-severity vulnerability in Qemu, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2019-03-21.
- How severe is CVE-2019-6778?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2019-6778 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.