psqlODBC large-object read overflows the application buffer
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
- Exploited
- No known exploitation
- Fix
- Fixed in 18.00.0006
- Who is exposed
- Not reported
Do first: Upgrade to a fixed version: 18.00.0006.
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- Published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 36/100 · provisional
- Fix
- Fixed in 18.00.0006
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
psqlODBC, the PostgreSQL ODBC driver used by client applications to connect to PostgreSQL databases, is affected. A malicious or untrusted database server, or an attacker intercepting the connection, can send more data than a large-object read buffer can hold, overwriting nearby memory in the client application and potentially causing it to crash or behave unpredictably.
Read the original description
psqlODBC copies the reply to a large-object read (loread) into the application's buffer using the length sent by the server, without comparing it to the buffer size. A server not trusted under current SSL settings, or a man-in-the-middle, can return more bytes than the buffer holds and overwrite adjacent memory in the client process with server-chosen bytes. Fetching any large-object column is sufficient to trigger it. Versions before psqlODBC 18.00.0006 are affected.
What to do
Upgrade to a fixed version: 18.00.0006.
Timeline
- CVE published
- First seen by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Posted on X by cve.now
- Record last updated
Affected versions
- PostgreSQL psqlODBC
fixed in 18.00.0006
Evidence 1
- Advisory
Corrections
None so far.
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