Vulnerability Description
An issue was discovered in adns before 1.5.2. pap_mailbox822 does not properly check st from adns__findlabel_next. Without this, an uninitialised stack value can be used as the first label length. Depending on the circumstances, an attacker might be able to trick adns into crashing the calling program, leaking aspects of the contents of some of its memory, causing it to allocate lots of memory, or perhaps overrunning a buffer. This is only possible with applications which make non-raw queries for SOA or RP records.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Adns | < 1.5.2 |
| Opensuse | Leap | 15.1 |
| Fedoraproject | Fedora | 31 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00037.htmlMailing ListThird Party Advisory
- http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=adns.gitThird Party Advisory
- http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=adns.git%3Ba=blob%3Bf=cha
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://www.chiark.greenend.org.uk/pipermail/adns-announce/2020/000004.htmlRelease NotesThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00037.htmlMailing ListThird Party Advisory
- http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=adns.gitThird Party Advisory
- http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=adns.git%3Ba=blob%3Bf=cha
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://www.chiark.greenend.org.uk/pipermail/adns-announce/2020/000004.htmlRelease NotesThird Party Advisory
FAQ
What is CVE-2017-9103?
CVE-2017-9103 is a vulnerability with a CVSS score of 9.8 (CRITICAL). An issue was discovered in adns before 1.5.2. pap_mailbox822 does not properly check st from adns__findlabel_next. Without this, an uninitialised stack value can be used as the first label length. Dep...
How severe is CVE-2017-9103?
CVE-2017-9103 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2017-9103?
Check the references section above for vendor advisories and patch information. Affected products include: Gnu Adns, Opensuse Leap, Fedoraproject Fedora.