Home/CVE/glibc 2.1.9x and earlier does not properly clear the RESOLV_HOST_CONF, HOSTALIASES, or RES_OPTIONS environmental variabl
CVE

CVE-2001-0170

glibc 2.1.9x and earlier does not properly clear the RESOLV_HOST_CONF, HOSTALIASES, or RES_OPTIONS environmental variabl

glibc 2.1.9x and earlier does not properly clear the RESOLV_HOST_CONF, HOSTALIASES, or RES_OPTIONS environmental variables when executing setuid/setgid programs, which could allow local users to read arbitrary files.

LOW · CVSS 2.1 EPSS 0.00639
Schedule remediation
  • Public exploit or PoC is available
Sigma rules8 YARA rules0
▤

Affected Products & Versions

4
immunixall versions
conectiva linuxall versions
debian linuxall versions
redhat linuxall versions
⚠

Public Exploits & PoCs

2
localglibc-2.2 / openssh-2.3.0p1 / glibc 2.1.9x - File Readverified
localResolv+ 'RESOLV_HOST_CONF' - Linux Library Command Executionverified
◈

Detection Rules (IDS/IPS)

1
snort-communityPROTOCOL-TELNET resolv_host_confattempted-admin
Open rulesets (ET Open, Snort Community, abuse.ch) link to source. Commercial rulesets are reference-only.
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productcriticalLinux Reverse Shell Indicator
producthighCommunication To LocaltoNet Tunneling Service Initiated - Linux
producthighPotentially Suspicious Malware Callback Communication - Linux
producthighLinux Crypto Mining Pool Connections
producthighCommunication To Ngrok Tunneling Service - Linux
producthighLinux Crypto Mining Indicators
▣

Scoring & Timeline

2.1
LOW · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:L/AC:L/Au:N/C:P/I:N/A:N
Published to NVD26 Mar 2001 · 05:00 AM
⚑

Vendor Advisories

1
rhsaRHSA-2001:001
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://archives.neohapsis.com/archives/bugtraq/2001-01/0131.htmlVendor Advisory
http://archives.neohapsis.com/archives/bugtraq/2001-01/0186.htmlPatchVendor Advisory
http://www.redhat.com/support/errata/RHSA-2001-001.htmlPatchVendor Advisory
http://www.securityfocus.com/bid/2181PatchVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/5907
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