CVE-2013-1847
MediumPublic exploitThe mod_dav_svn Apache HTTPD server module in Subversion 1.6.0 through 1.6.20 and 1.7.0 through 1.7.8 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via an anonymous LOCK for a URL that does not exist.
Published May 2, 2013 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2013-1847
Key Facts
Patch immediately- CVE-2013-1847 is a medium-severity vulnerability (CVSS 5.0 v2) affecting Subversion (Apache), mod_dav_svn (amazon), subversion-devel (amazon) and 14 more products.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 51% probability of exploitation in the next 30 days.
- Fixed versions are available, including libsvn_auth_gnome_keyring-1-0 1.9.5-1.1, libsvn_auth_kwallet-1-0 1.9.5-1.1, mod_dav_svn 1.6.11-11.el5_9.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
5.0
AV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS (30-day exploit likelihood)
51%
Higher than 98.9% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2013-1847 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
The mod_dav_svn Apache HTTPD server module in Subversion 1.6.0 through 1.6.20 and 1.7.0 through 1.7.8 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via an anonymous LOCK for a URL that does not exist.
Affected Products
88 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| SubversionApache | 1.6.0, 1.6.1, 1.6.10, 1.6.11, 1.6.12, 1.6.13, 1.6.14, 1.6.15 | 1.7.9-1 |
| mod_dav_svnamazon | See advisory | 1.7.9-1.28.amzn1 |
| subversion-develamazon | See advisory | 1.7.9-1.28.amzn1 |
| subversion-javahlamazon | See advisory | 1.7.9-1.28.amzn1 |
| subversion-libsamazon | See advisory | 1.7.9-1.28.amzn1 |
Patched Releases
libsvn_auth_gnome_keyring-1-0
1.9.5-1.1
libsvn_auth_kwallet-1-0
1.9.5-1.1
mod_dav_svn
1.6.11-11.el5_9, 1.6.11-9.el6_4, 1.7.9-1.28.amzn1
Subversion
0:1.6.11-11.el5_9, 0:1.6.11-9.el6_4, 1.6.11-11.el5_9, 1.6.11-9.el6_4, 1.6.12dfsg-7+deb6u2, 1.6.17-1.29.1, 1.7.9-1, 1.7.9-1.28.amzn1, 1.9.5-1.1
subversion-bash-completion
1.9.5-1.1
subversion-devel
1.6.11-11.el5_9, 1.6.11-9.el6_4, 1.6.17-1.29.1, 1.7.9-1.28.amzn1, 1.9.5-1.1
subversion-gnome
1.6.11-9.el6_4
subversion-javahl
1.6.11-11.el5_9, 1.6.11-9.el6_4, 1.7.9-1.28.amzn1
subversion-kde
1.6.11-9.el6_4
subversion-libs
1.7.9-1.28.amzn1
subversion-perl
1.6.11-11.el5_9, 1.6.11-9.el6_4, 1.6.17-1.29.1, 1.7.9-1.28.amzn1, 1.9.5-1.1
subversion-python
1.6.17-1.29.1, 1.7.9-1.28.amzn1, 1.9.5-1.1
subversion-python-ctypes
1.9.5-1.1
subversion-ruby
1.6.11-11.el5_9, 1.6.11-9.el6_4, 1.7.9-1.28.amzn1, 1.9.5-1.1
subversion-server
1.6.17-1.29.1, 1.9.5-1.1
subversion-svn2cl
1.6.11-9.el6_4
subversion-tools
1.6.17-1.29.1, 1.7.9-1.28.amzn1, 1.9.5-1.1
Timeline
Publicly disclosed
May 2, 2013
Last updated
Aug 4, 2026
References
- advisoryRHSA-2013:0737
- advisoryhttps://security-tracker.debian.org/tracker/CVE-2013-1847
- advisoryhttp://subversion.apache.org/security/CVE-2013-1847-advisory.txt
- exploitExploitDB-38421
- otheropenSUSE-SU-2013:0687
FAQ
Common Questions.
The mod_dav_svn Apache HTTPD server module in Subversion 1.6.0 through 1.6.20 and 1.7.0 through 1.7.8 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via an anonymous LOCK for a URL that does not exist.
Affected: Subversion (Apache) versions 1.6.0, 1.6.1, 1.6.10, 1.6.11, 1.6.12, 1.6.13, 1.6.14, 1.6.15; mod_dav_svn (amazon); subversion-devel (amazon), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including libsvn_auth_gnome_keyring-1-0 1.9.5-1.1, libsvn_auth_kwallet-1-0 1.9.5-1.1, mod_dav_svn 1.6.11-11.el5_9.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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