CVE-2013-5123

Exp

The mirroring support (-M, --use-mirrors) in Python Pip before 1.5 uses insecure DNS querying and authenticity checks which allows attackers to perform man-in-the-middle attacks.

Published: 2019-11-05 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-5123 is rated High Exploit Risk (69.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 12.38%, 94th percentile). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2013-5123

EDB-ID Source Kind Published Link
24086 exploit_db edb 2013-01-13 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2013-5123

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-01-18 14.20% 12.38% -1.81%
2 2025-12-13 12.86% 14.20% +1.33%
3 2025-03-30 — 12.86% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-5123

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.9 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 2.2 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2013-5123

GitHub Security Advisory for CVE-2013-5123

OS Trackers for CVE-2013-5123

vendor priority summary link
debian unimportant CVE-2013-5123 unimportant priority: Debian including 1 source packages (python-pip), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2013-5123
redhat medium — https://access.redhat.com/security/cve/CVE-2013-5123
suse medium CVE-2013-5123 severity moderate: SUSE including 85 source package names (3.9.20-50.2:python39-pip-20.2.4-7.5.1, 3.9.20-50.2:python39-setuptools-44.1.1-7.3.1, …), 181 product×package rows across 62 product lines (Container bci/python, Container containers/python, … (62 product lines)): Fixed 144, Known Not Affected 35, Will Not Fix 2. https://www.suse.com/security/cve/CVE-2013-5123/
ubuntu medium CVE-2013-5123 medium priority: Ubuntu including 1 source packages (python-pip), 15 status rows across 15 suites (artful, bionic, lucid, precise, quantal, raring, saucy, trusty, upstream, utopic, vivid, wily, xenial, yakkety, zesty): ignored 10, not-affected 4, released 1. https://ubuntu.com/security/CVE-2013-5123

Affected software / configurations for CVE-2013-5123

Vendor Product Version Raw CPE
pypa pip < 1.5 cpe:2.3:a:pypa:pip:*:*:*:*:*:*:*:*
virtualenv virtualenv 12.0.7 cpe:2.3:a:virtualenv:virtualenv:12.0.7:*:*:*:*:*:*:*
fedoraproject fedora 20 cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
fedoraproject fedora 21 cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*
redhat openshift 1.0 cpe:2.3:a:redhat:openshift:1.0:*:*:*:enterprise:*:*:*
redhat openshift 2.0 cpe:2.3:a:redhat:openshift:2.0:*:*:*:enterprise:*:*:*
redhat software_collections — cpe:2.3:a:redhat:software_collections:-:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
debian debian_linux 10.0 cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

References for CVE-2013-5123

cvelogic Threat Intelligence