CVE-2018-16452: tcpdump Uncontrolled Recursion
CVSS: 7.5v3.1HighModified
AliasesALPINE-CVE-2018-16452UBUNTU-CVE-2018-16452DEBIAN-CVE-2018-16452
Published 03-10-2019Last modified 03-12-2025
Vulnerability summary
CVE-2018-16452 is a high (CVSS 7.5) Uncontrolled Recursion vulnerability in tcpdump. EPSS estimates a 4.12% chance of exploitation in the next 30 days, higher than 90.6% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
4.12%
0%100%
Low · 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 12 · Related 8Timeline
- 03-10-2019PublishedVulnerability first disclosed.
- 03-12-2025Last modifiedVulnerability information updated.
Description
The SMB parser in tcpdump before 4.9.3 has stack exhaustion in smbutil.c:smb_fdata() via recursion.
CVSS metrics
6 scores · 5 sources · 2 versionsHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HSourcesAll 5 agree
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
4.12%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
0.00 pp
From 4.12% on 18-09-2026
18-09-202618-10-2026
EPSS score4.12%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Alpine1 product
- tcpdump< 4.9.3-r0
Debian1 product
- tcpdump< 4.9.3-1
Tcpdump1 product
- tcpdump< 4.9.3
Ubuntu1 product
- tcpdump< 4.9.3-0ubuntu0.14.04.1+esm1 | < 4.9.3-0ubuntu0.16.04.1 | < 4.9.3-0ubuntu0.18.04.1
4 vendors · 4 products
References
23 links- github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9/CHANGESX Refsource MISCRelease NotesThird Party Advisory
- github.com/the-tcpdump-group/tcpdump/commit/24182d959f661327525a20d9a94c98a8ec016778X Refsource CONFIRMPatchThird Party Advisory
Show all 23 references
- support.apple.com/kb/HT210788X Refsource CONFIRM
- security.netapp.com/advisory/ntap-20200120-0001/X Refsource CONFIRM