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CVE Record

CVE-2017-9107: An issue was discovered in adns before 1.5.2.

An issue was discovered in adns before 1.5.2. It overruns reading a buffer if a domain ends with backslash. If the query domain ended with \, and adns_qf_quoteok_query was specified, qdparselabel would read additional bytes from the buffer and try to treat them as the escape sequence. It would depart the input buffer and start processing many bytes of arbitrary heap data as if it were the query domain. Eventually it would run out of input or find some other kind of error, and declare the query domain invalid. But before then it might outrun available memory and crash. In principle this could be a denial of service attack.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2017-9107 is a memory handling flaw in adns before 1.5.2. A specially formed domain name could make adns read beyond the intended buffer and potentially crash, creating a denial-of-service risk. The supplied sources do not show data theft, code execution, or confirmed real-world exploitation. Exposure is likely limited to software or systems using adns before 1.5.2, especially where untrusted domain strings reach adns queries using adns_qf_quoteok_query. The bundle does not identify specific downstream products beyond Fedora package advisories. Treat this as a targeted availability risk, not an emergency unless adns is used in critical externally reachable paths. Prioritize inventory and routine patching, with higher urgency for services that process untrusted DNS names. Mitigation focus: Inventory systems and applications using adns.; Upgrade adns to 1.5.2 or later where available.; Apply relevant distribution updates, including Fedora package fixes if applicable..

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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4Source links

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