CVE-2018-12617
qmp_guest_file_read in qga/commands-posix.c and qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent) in QEMU 2.12.50 has an integer…
- 7.5HighCVSS base score
- 24.6%Exploitation in 30 daysEPSS · top 2.1% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
qmp_guest_file_read in qga/commands-posix.c and qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent) in QEMU 2.12.50 has an integer overflow causing a g_malloc0() call to trigger a segmentation fault when trying to allocate a large memory chunk. The vulnerability can be exploited by sending a crafted QMP command (including guest-file-read with a large count value) to the agent via the listening socket.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it. A reference of the record is tagged as an exploit.
Show the exploits2
Exploit-DB1 entry
- QEMU Guest Agent 2.12.50 - Denial of Service (Exploit-DB entry) (opens in a new tab)
EDB-ID 44925dos, linuxpublished 22 Jun 2018Not verified
References tagged exploit1 reference
- 44925 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 24.6% · top 2.1% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
n/a
- affected n/a
References
References8
- [debian-lts-announce] 20190228 [SECURITY] [DLA 1694-1] qemu security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://gist.github.com/fakhrizulkifli/c7740d28efa07dafee66d4da5d857ef6 (opens in a new tab)x_refsource_MISCx_transferred
- USN-3826-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- https://lists.gnu.org/archive/html/qemu-devel/2018-06/msg03385.html (opens in a new tab)x_refsource_MISCx_transferred
- 104531 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 44925 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- DSA-4454 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 20190531 [SECURITY] [DSA 4454-1] qemu security update (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2018-4573 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-12617)Record last updated .