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    CVE-2015-9231

    iTerm2 3.x before 3.1.1 allows remote attackers to discover passwords by reading DNS queries. A new (default) feature was added to iTerm2 version 3.0.0 (and unreleased 2.9.x versions such as 2.9.20150717) that resulted in a potential information disclosure. In an attempt to see whether the text under the cursor (or selected text) was a URL, the text would be sent as an unencrypted DNS query. This has the potential to result in passwords and other sensitive information being sent in cleartext without the user being aware.

    Published:Sep 20, 2017
    Last Modified:Apr 20, 2025
    EPS:Sep 20, 2017
    EPSS Score:0.00907
    CVSS Score:7.5

    Affected Products

    Vendor
    Iterm2
    Product
    Iterm2

    Exploits

    https://gitlab.com/gnachman/iterm2/issues/6050https://gitlab.com/gnachman/iterm2/issues/6050

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-116 Excavation
    CAPEC-13 Subverting Environment Variable Values
    CAPEC-169 Footprinting
    CAPEC-22 Exploiting Trust in Client
    CAPEC-224 Fingerprinting
    CAPEC-285 ICMP Echo Request Ping
    CAPEC-287 TCP SYN Scan
    CAPEC-290 Enumerate Mail Exchange (MX) Records
    CAPEC-291 DNS Zone Transfers
    CAPEC-292 Host Discovery
    CAPEC-293 Traceroute Route Enumeration
    CAPEC-294 ICMP Address Mask Request
    CAPEC-295 Timestamp Request
    CAPEC-296 ICMP Information Request
    CAPEC-297 TCP ACK Ping
    CAPEC-298 UDP Ping
    CAPEC-299 TCP SYN Ping
    CAPEC-300 Port Scanning
    CAPEC-301 TCP Connect Scan
    CAPEC-302 TCP FIN Scan
    CAPEC-303 TCP Xmas Scan
    CAPEC-304 TCP Null Scan
    CAPEC-305 TCP ACK Scan
    CAPEC-306 TCP Window Scan
    CAPEC-307 TCP RPC Scan
    CAPEC-308 UDP Scan
    CAPEC-309 Network Topology Mapping
    CAPEC-310 Scanning for Vulnerable Software
    CAPEC-312 Active OS Fingerprinting
    CAPEC-313 Passive OS Fingerprinting
    CAPEC-317 IP ID Sequencing Probe
    CAPEC-318 IP 'ID' Echoed Byte-Order Probe
    CAPEC-319 IP (DF) 'Don't Fragment Bit' Echoing Probe
    CAPEC-320 TCP Timestamp Probe
    CAPEC-321 TCP Sequence Number Probe
    CAPEC-322 TCP (ISN) Greatest Common Divisor Probe
    CAPEC-323 TCP (ISN) Counter Rate Probe
    CAPEC-324 TCP (ISN) Sequence Predictability Probe
    CAPEC-325 TCP Congestion Control Flag (ECN) Probe
    CAPEC-326 TCP Initial Window Size Probe
    CAPEC-327 TCP Options Probe
    CAPEC-328 TCP 'RST' Flag Checksum Probe
    CAPEC-329 ICMP Error Message Quoting Probe
    CAPEC-330 ICMP Error Message Echoing Integrity Probe
    CAPEC-472 Browser Fingerprinting
    CAPEC-497 File Discovery
    CAPEC-508 Shoulder Surfing
    CAPEC-573 Process Footprinting
    CAPEC-574 Services Footprinting
    CAPEC-575 Account Footprinting
    CAPEC-576 Group Permission Footprinting
    CAPEC-577 Owner Footprinting
    CAPEC-59 Session Credential Falsification through Prediction
    CAPEC-60 Reusing Session IDs (aka Session Replay)
    CAPEC-616 Establish Rogue Location
    CAPEC-643 Identify Shared Files/Directories on System
    CAPEC-646 Peripheral Footprinting
    CAPEC-651 Eavesdropping
    CAPEC-79 Using Slashes in Alternate Encoding

    Related CVEs

    CVE-2026-41253 (CVSS 6.9) — In iTerm2 through 3.6.9, displaying a .txt file can cause code execution via DCS 2000p and OSC 135 data, if th…
    CVE-2025-22275 (CVSS 9.3) — iTerm2 3.5.6 through 3.5.10 before 3.5.11 sometimes allows remote attackers to obtain sensitive information fr…
    CVE-2024-38396 (CVSS 9.8) — An issue was discovered in iTerm2 3.5.x before 3.5.2. Unfiltered use of an escape sequence to report a window …
    CVE-2024-38395 (CVSS 9.8) — In iTerm2 before 3.5.2, the "Terminal may report window title" setting is not honored, and thus remote code ex…
    CVE-2023-46321 (CVSS 9.8) — iTermSessionLauncher.m in iTerm2 before 3.5.0beta12 does not sanitize paths in x-man-page URLs. They may have …
    CVE-2023-46322 (CVSS 9.8) — iTermSessionLauncher.m in iTerm2 before 3.5.0beta12 does not sanitize ssh hostnames in URLs. The hostname's in…
    CVE-2023-46300 (CVSS 9.8) — iTerm2 before 3.4.20 allow (potentially remote) code execution because of mishandling of certain escape sequen…
    CVE-2023-46301 (CVSS 9.8) — iTerm2 before 3.4.20 allow (potentially remote) code execution because of mishandling of certain escape sequen…
    CVE-2022-45872 (CVSS 9.8) — iTerm2 before 3.4.18 mishandles a DECRQSS response.…
    CVE-2019-19022 (CVSS 7.5) — iTerm2 through 3.3.6 has potentially insufficient documentation about the presence of search history in com.go…

    References

    https://github.com/gnachman/iTerm2/commit/33ccaf61e34ef32ffc9d6b2be5dd218f6bb55f51
    https://github.com/gnachman/iTerm2/commit/e4eb1063529deb575b75b396138d41554428d522
    https://gitlab.com/gnachman/iterm2/issues/3688
    https://gitlab.com/gnachman/iterm2/issues/5303
    https://gitlab.com/gnachman/iterm2/issues/6050
    https://gitlab.com/gnachman/iterm2/issues/6068
    https://gitlab.com/gnachman/iterm2/wikis/dnslookupissue
    https://news.ycombinator.com/item?id=15286956
    https://github.com/gnachman/iTerm2/commit/33ccaf61e34ef32ffc9d6b2be5dd218f6bb55f51
    https://github.com/gnachman/iTerm2/commit/e4eb1063529deb575b75b396138d41554428d522
    https://gitlab.com/gnachman/iterm2/issues/3688
    https://gitlab.com/gnachman/iterm2/issues/5303
    https://gitlab.com/gnachman/iterm2/issues/6050
    https://gitlab.com/gnachman/iterm2/issues/6068
    https://gitlab.com/gnachman/iterm2/wikis/dnslookupissue
    https://news.ycombinator.com/item?id=15286956

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High