Buffer overflow in programs/pluto/xauth.c in the client in Openswan 2.6.26 through 2.6.28 might allow remote authenticated gateways to execu
Buffer overflow in programs/pluto/xauth.c in the client in Openswan 2.6.26 through 2.6.28 might allow remote authenticated gateways to execute arbitrary code or cause a denial of service via a long cisco_banner (aka server_banner) field.
- Published
- Oct 5, 2010
- Updated
- Jun 16, 2026
- EPSS
- 4.0% · 90th percentile
- CWE
- CWE-94
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Report tools
Action score
27
Monitor
Low priority for now.
- CVSS
- 26 / 40 · 6.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 1 / 30 · 4.0%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| xelerance | openswan | cpe:2.3:a:xelerance:openswan |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- xelerance openswan2.6.26
- xelerance openswan2.6.27
- xelerance openswan2.6.28
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Red Hat:enterprise_linux:6::client | openswan | before 0:2.6.24-8.el6_0.1 | 0:2.6.24-8.el6_0.1 |
| Red Hat:enterprise_linux:6::client | openswan-debuginfo | before 0:2.6.24-8.el6_0.1 | 0:2.6.24-8.el6_0.1 |
| Red Hat:enterprise_linux:6::client | openswan-doc | before 0:2.6.24-8.el6_0.1 | 0:2.6.24-8.el6_0.1 |
Same product
xelerance: all recordsOther highest-scoring records for the same primary product.
- CVE-2018-15836In verify_signed_hash() in lib/liboswkeys/signatures.c in Openswan before 2.6.50.1, the RSA implementation does not verify the value of padd30Monitor
- CVE-2013-2053Buffer overflow in the atodn function in Openswan before 2.6.39, when Opportunistic Encryption is enabled and an RSA key is being used, allo28Monitor
- CVE-2010-3753programs/pluto/xauth.c in the client in Openswan 2.6.26 through 2.6.28 allows remote authenticated gateways to execute arbitrary commands vi27Monitor
- CVE-2010-3752programs/pluto/xauth.c in the client in Openswan 2.6.25 through 2.6.28 allows remote authenticated gateways to execute arbitrary commands vi27Monitor
- CVE-2010-3302Buffer overflow in programs/pluto/xauth.c in the client in Openswan 2.6.25 through 2.6.28 might allow remote authenticated gateways to execu27Monitor
- CVE-2014-2037Openswan 2.6.40 allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon restart) via IKEv2 packets tha21Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| red hat:openswan | 0:2.6.24-8.el6_0.1 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:openswan-debuginfo | 0:2.6.24-8.el6_0.1 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
| red hat:openswan-doc | 0:2.6.24-8.el6_0.1 · Red Hat:enterprise_linux:6::client | Package registry (OSV) |
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- P · data can be read
- Integrity
- P · data or configuration can be modified
- Availability
- P · the service can be disrupted
- Attack complexity
- Low
- Confidentiality impact
- P
- Integrity impact
- P
- Availability impact
- P
Weakness class (CWE)
CWE-94 · Improper Control of Generation of Code ('Code Injection')CVSS vector
AV:N/AC:L/Au:S/C:P/I:P/A:P
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
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References
- lists.fedoraproject.org/pipermail/package-announce/2010-October/048999.html
- lists.fedoraproject.org/pipermail/package-announce/2010-October/049053.html
- lists.fedoraproject.org/pipermail/package-announce/2010-October/049073.html
- secunia.com/advisories/41769
- www.openswan.org/download/CVE-2010-3308/CVE-2010-3308.txt
- www.openswan.org/download/CVE-2010-3308/openswan-2.6.26-2.6.28-CVE-2010-330x.patch
- www.redhat.com/support/errata/RHSA-2010-0892.html
- www.securityfocus.com/bid/43588
- www.securitytracker.com/id?1024749
- www.vupen.com/english/advisories/2010/2526
Vendor advisories and official records. Exploit/PoC links are deliberately left out.