CVE-2022-30295
uClibc-ng through 1.0.40 and uClibc through 0.9.33.2 use predictable DNS transaction IDs that may...
uClibc-ng through 1.0.40 and uClibc through 0.9.33.2 use predictable DNS transaction IDs that may lead to DNS cache poisoning. This is related to a reset of a value to 0x2.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
uClibc-ng through 1.0.40 and uClibc through 0.9.33.2 use predictable DNS transaction IDs that may lead to DNS cache poisoning. This is related to a reset of a value to 0x2.
- Record
CVE-2022-30295- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N - CVSS 2.0
- 4.0 Medium
AV:N/AC:H/Au:N/C:P/I:P/A:N - Weakness
- CWE-330
- Updated
- 2026-11-02
CVE List No score
uClibc-ng through 1.0.40 and uClibc through 0.9.33.2 use predictable DNS transaction IDs that may lead to DNS cache poisoning. This is related to a reset of a value to 0x2.
- Record
CVE-2022-30295- Updated
- 2026-11-02
EUVDEUVD-2022-52246 No score
uClibc-ng through 1.0.40 and uClibc through 0.9.33.2 use predictable DNS transaction IDs that may lead to DNS cache poisoning. This is related to a reset of a value to 0x2.
- Record
EUVD-2022-52246- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-gv7v-mf7r-p93f
uClibc-ng through 1.0.40 and uClibc through 0.9.33.2 use predictable DNS transaction IDs that may...
uClibc-ng through 1.0.40 and uClibc through 0.9.33.2 use predictable DNS transaction IDs that may lead to DNS cache poisoning. This is related to a reset of a value to 0x2.
- Record
GHSA-gv7v-mf7r-p93f- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N - Updated
- 2026-11-02
OSVAZL-9702
CVE-2022-30295 affecting package uclibc-ng for versions less than 1.0.41-1
uClibc-ng through 1.0.40 and uClibc through 0.9.33.2 use predictable DNS transaction IDs that may lead to DNS cache poisoning. This is related to a reset of a value to 0x2.
- Record
AZL-9702- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N - Updated
- 2026-11-02
OSVDEBIAN-CVE-2022-30295
uClibc-ng through 1.0.40 and uClibc through 0.9.33.2 use predictable DNS transaction IDs that may lead to DNS cache poisoning. This is related to a reset of a value to 0x2.
- Record
DEBIAN-CVE-2022-30295- CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N - Updated
- 2026-11-03
OSV No score
uClibc-ng through 1.0.40 and uClibc through 0.9.33.2 use predictable DNS transaction IDs that may lead to DNS cache poisoning. This is related to a reset of a value to 0x2.
- Record
CVE-2022-30295- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
uclibc-ngAzure Linux:2 |
before 1.0.41-1 | 1.0.41-1 |
uclibcDebian:12 |
All versions, plus listed versions 1.0.35-11.0.54-1 |
None known |
uclibcDebian:13 |
All versions, plus listed versions 1.0.35-11.0.54-1 |
None known |
uclibcDebian:14 |
All versions, plus listed versions 1.0.35-11.0.54-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| 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-2022-30295 is a medium vulnerability (CVSS 6.5) in Uclibc, published May 6, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 11.2%, the 95th percentile. Fixed in uclibc-ng 1.0.41-1.
References
nozominetworks.com/blog/nozomi-networks-discovers-unpatched-dns-bug-in-popular-c-standard-library-putting-iot-at-risk
kb.cert.org/vuls/id/473698
nvd.nist.gov/vuln/detail/CVE-2022-30295
github.com/advisories/GHSA-gv7v-mf7r-p93f
security-tracker.debian.org/tracker/CVE-2022-30295