Security readout for executives and security teams
Plain-English summary
CVE-2019-11360 is a memory corruption flaw in iptables-restore. If a vulnerable system processes a malicious rules-save file, the tool may crash and could potentially run attacker-controlled code. The sources identify iptables 1.8.2 and do not show active exploitation.
Executive priority
Treat as a targeted operational risk rather than an internet-wide emergency. Prioritize servers or automation pipelines that restore firewall rules from files, because a malicious file could disrupt firewall management or potentially escalate impact on a vulnerable host.
Technical view
The flaw is a buffer overflow in netfilter iptables 1.8.2, related to add_param_to_argv in xshared.c. It is triggered while iptables-restore parses a specially crafted iptables-save file. Reported impact is denial of service or potential code execution.
Likely exposure
Exposure is most likely on Linux systems running iptables 1.8.2 where iptables-restore consumes saved rules files. Risk increases when files come from automation, backups, handoffs, or other users. The source bundle does not identify broader affected versions or CPEs.
Exploitation context
The provided sources describe a crafted-file attack path, not a network-reachable service issue. Exploitation requires getting iptables-restore to process malicious input. CISA KEV is false in the bundle, and no cited source states active exploitation.
Researcher notes
Evidence is limited: no CVSS, CWE, CPE list, or confirmed exploit-in-the-wild signal is included. The strongest technical anchors are the CVE description, the public write-up, and the upstream netfilter commit touching iptables/xshared.c.
Mitigation direction
- Identify systems running netfilter iptables 1.8.2.
- Update iptables through trusted OS or vendor package channels.
- Check vendor advisories for whether the upstream xshared.c fix is included.
- Restrict who can provide files processed by iptables-restore.
- Avoid restoring rules from untrusted or unaudited iptables-save files.
Validation and detection
- Inventory iptables and iptables-restore versions on managed Linux hosts.
- Review package changelogs for the upstream xshared.c fix reference.
- Map automation that imports or restores iptables-save files.
- Confirm restore inputs are generated and controlled by trusted administrators.
- Track vendor guidance where distribution backports obscure upstream version numbers.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2019-11360 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://0day.work/cve-2019-11360-bufferoverflow-in-iptables-restore-v1-8-2/CVE reference · x_refsource_MISC
- https://git.netfilter.org/iptables/commit/iptables/xshared.c?id=2ae1099a42e6a0f06de305ca13a842ac83d4683eCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.