CVE-2009-1958
charon/sa/tasks/child_create.c in the charon daemon in strongSWAN before 4.3.1 switches the NULL...
charon/sa/tasks/child_create.c in the charon daemon in strongSWAN before 4.3.1 switches the NULL checks for TSi and TSr payloads, which allows remote attackers to cause a denial of service via an IKE_AUTH request without a (1) TSi or (2) TSr traffic selector.
Exploit likelihood
What each source reports
NVD Score used
charon/sa/tasks/child_create.c in the charon daemon in strongSWAN before 4.3.1 switches the NULL checks for TSi and TSr payloads, which allows remote attackers to cause a denial of service via an IKE_AUTH request without a (1) TSi or (2) TSr traffic selector.
- Record
CVE-2009-1958- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE List No score
charon/sa/tasks/child_create.c in the charon daemon in strongSWAN before 4.3.1 switches the NULL checks for TSi and TSr payloads, which allows remote attackers to cause a denial of service via an IKE_AUTH request without a (1) TSi or (2) TSr traffic selector.
- Record
CVE-2009-1958- Updated
- 2026-11-02
EUVDEUVD-2009-1953 No score
charon/sa/tasks/child_create.c in the charon daemon in strongSWAN before 4.3.1 switches the NULL checks for TSi and TSr payloads, which allows remote attackers to cause a denial of service via an IKE_AUTH request without a (1) TSi or (2) TSr traffic selector.
- Record
EUVD-2009-1953- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-pm9j-fmr9-h964 No score
charon/sa/tasks/child_create.c in the charon daemon in strongSWAN before 4.3.1 switches the NULL...
charon/sa/tasks/child_create.c in the charon daemon in strongSWAN before 4.3.1 switches the NULL checks for TSi and TSr payloads, which allows remote attackers to cause a denial of service via an IKE_AUTH request without a (1) TSi or (2) TSr traffic selector.
- Record
GHSA-pm9j-fmr9-h964- Updated
- 2026-11-02
OSV No score
charon/sa/tasks/child_create.c in the charon daemon in strongSWAN before 4.3.1 switches the NULL checks for TSi and TSr payloads, which allows remote attackers to cause a denial of service via an IKE_AUTH request without a (1) TSi or (2) TSr traffic selector.
- Record
CVE-2009-1958- Updated
- 2026-11-02
OSVDEBIAN-CVE-2009-1958 No score
charon/sa/tasks/child_create.c in the charon daemon in strongSWAN before 4.3.1 switches the NULL checks for TSi and TSr payloads, which allows remote attackers to cause a denial of service via an IKE_AUTH request without a (1) TSi or (2) TSr traffic selector.
- Record
DEBIAN-CVE-2009-1958- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
strongswanDebian:12 |
before 4.2.14-1.1 | 4.2.14-1.1 |
strongswanDebian:13 |
before 4.2.14-1.1 | 4.2.14-1.1 |
strongswanDebian:14 |
before 4.2.14-1.1 | 4.2.14-1.1 |
strongswanDebian:4.0 From an advisory covering 4 CVEs |
before 2.8.0+dfsg-1+etch2, plus listed versions 2.8.0+dfsg-12.8.0+dfsg-1+etch1 |
2.8.0+dfsg-1+etch2 |
strongswanDebian:5.0 From an advisory covering 4 CVEs |
before 4.2.4-5+lenny3, plus listed versions 4.2.4-54.2.4-5+lenny14.2.4-5+lenny2 |
4.2.4-5+lenny3 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2009-1958 is a medium vulnerability (CVSS 5.0) in Strongswan, published June 6, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.95%, the 87th percentile. Fixed in strongswan 4.2.14-1.1.
References
download.strongswan.org/patches/04_swapped_ts_check_patch/strongswan-4.x.x._swapped_ts_check.readme
secunia.com/advisories/35296
lists.strongswan.org/pipermail/users/2009-May/003457.html
debian.org/security/2009/dsa-1899