FreeBSD up to 2.1.6.1 ppp Home memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in FreeBSD up to 2.1.6.1. This affects an unknown function of the component ppp. Performing a manipulation of the argument Home as part of Environment Variable results in memory corruption. This vulnerability is identified as CVE-1999-1385. Additionally, an exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in FreeBSD up to 2.1.6.1 (Operating System). This affects an unknown functionality of the component ppp. The manipulation of the argument HOME as part of a Environment Variable leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

buffer overflow in ppp program in freebsd 2.1 and earlier allows local users to gain privileges via a long home environment variable.

The weakness was released 12/19/1996 as FreeBSD-SA-96:20 as not defined advisory (Website). It is possible to read the advisory at ftp.freebsd.org. This vulnerability is uniquely identified as CVE-1999-1385. The exploitability is told to be easy. Attacking locally is a requirement. No form of authentication is needed for exploitation. Technical details and a exploit are known.

After immediately, there has been an exploit disclosed. The exploit is shared for download at archives.neohapsis.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (7465), OSVDB (6085†) and Vulnerability Center (SBV-23331†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 8.4

VulDB Base Score: 9.3
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

12/16/1996 🔍
12/19/1996 +3 days 🔍
12/19/1996 +0 days 🔍
12/19/1996 +0 days 🔍
04/09/2004 +2667 days 🔍
08/31/2009 +1970 days 🔍
06/17/2014 +1751 days 🔍
04/16/2026 +4321 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: FreeBSD-SA-96:20
Status: Confirmed

CVE: CVE-1999-1385 (🔍)
GCVE (CVE): GCVE-0-1999-1385
GCVE (VulDB): GCVE-100-13791
X-Force: 7465
OSVDB: 6085 - FreeBSD ppp HOME Environment Local Overflow
Vulnerability Center: 23331 - FreeBSD <= 2.1 PPP HOME Environment Variable Local Privileges Escalation Vulnerability, High

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/17/2014 18:04
Updated: 04/16/2026 11:43
Changes: 06/17/2014 18:04 (54), 02/13/2017 10:33 (9), 04/16/2026 11:43 (20)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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