Ubuntu update for libsolv
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2018-20532 CVE-2018-20533 CVE-2018-20534 |
| CWE-ID | CWE-476 CWE-20 |
| Exploitation vector | Network |
| Public exploit |
Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available. Public exploit code for vulnerability #3 is available. |
| Vulnerable software Subscribe |
libsolv (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) NULL pointer dereference
EUVDB-ID: #VU17719
Risk: Low
CVSSv3.1: 3.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C]
CVE-ID: CVE-2018-20532
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input processed by the testcase_read function, as defined in the ext/testcase.c source code file of the affected software. A remote attacker can trick the victim into opening or executing a file that submits malicious input, trigger a NULL pointer dereference condition and cause the affected software to crash, resulting in a DoS condition.
MitigationUpdate the affected packages.
- Ubuntu 18.10
- libsolv-tools - 0.6.35-2ubuntu0.18.10.1
- libsolv0 - 0.6.35-2ubuntu0.18.10.1
- libsolvext0 - 0.6.35-2ubuntu0.18.10.1
libsolv (Ubuntu package): 0.6.5-1 - 0.6.35-2ubuntu1
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
2) NULL pointer dereference
EUVDB-ID: #VU17720
Risk: Low
CVSSv3.1: 3.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C]
CVE-ID: CVE-2018-20533
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input processed by the testcase_str2dep_complex function, as defined in the ext/testcase.c source code file of the affected software. A remote attacker can trick the victim into opening or executing a file that submits malicious input, trigger a NULL pointer dereference condition and cause the affected software to crash, resulting in a DoS condition.
MitigationUpdate the affected packages.
- Ubuntu 18.10
- libsolv-tools - 0.6.35-2ubuntu0.18.10.1
- libsolv0 - 0.6.35-2ubuntu0.18.10.1
- libsolvext0 - 0.6.35-2ubuntu0.18.10.1
libsolv (Ubuntu package): 0.6.5-1 - 0.6.35-2ubuntu1
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
3) Input validation error
EUVDB-ID: #VU17721
Risk: Low
CVSSv3.1: 3.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C]
CVE-ID: CVE-2018-20534
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input processed by the pool_whatprovides function, as defined in the ext/pool.h source code file of the affected software. A remote attacker can trick the victim into opening or executing a file that submits malicious input, trigger an illegal access address condition and cause the affected software to crash, resulting in a DoS condition.
MitigationUpdate the affected packages.
- Ubuntu 18.10
- libsolv-tools - 0.6.35-2ubuntu0.18.10.1
- libsolv0 - 0.6.35-2ubuntu0.18.10.1
- libsolvext0 - 0.6.35-2ubuntu0.18.10.1
libsolv (Ubuntu package): 0.6.5-1 - 0.6.35-2ubuntu1
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
