PT-2019-4774 · Gnome+2 · Libsoup+2

Salvatore Bonaccorso · Published 2019-10-06 · Updated 2022-11-18 · CVE-2019-17266

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions libsoup versions 2.65.1 through 2.68.1

Description The issue is caused by a heap-based buffer over-read in the soup ntlm parse challenge() function, located in soup-auth-ntlm.c, which fails to properly check the length of an NTLM message before performing a memcpy. This can allow a remote attacker to impact the integrity, confidentiality, and availability of protected information.

Recommendations For versions 2.65.1 through 2.68.1, consider disabling the soup ntlm parse challenge() function as a temporary workaround until a patch is available. Restrict access to NTLM authentication to minimize the risk of exploitation. Avoid using NTLM authentication in the affected libsoup versions until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

ALT-PU-2019-2849

ALT-PU-2022-3170

BDU:2020-01346

CVE-2019-17266

MGASA-2019-0312

USN-4152-1

Affected Products

Alt Linux

Ubuntu

Libsoup

References · 26

• 🔥❌ https://github.com/Kirin-say/Vulnerabilities/blob/master/CVE-2019-17266_POC.md · Exploit, Deleted
• https://bdu.fstec.ru/vul/2020-01346 · Security Note
• https://osv.dev/vulnerability/CVE-2019-17266 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2019-0312.html · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17266 · Security Note
• https://errata.altlinux.org/ALT-PU-2019-2849 · Vendor Advisory
• https://usn.ubuntu.com/4152-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-4152-1 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2019-0312 · Vendor Advisory
• https://osv.dev/vulnerability/USN-4152-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-17266 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-17266 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-17266 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2019-17266 · Vendor Advisory
• https://errata.altlinux.org/ALT-PU-2022-3170 · Vendor Advisory